Finding the Fourth Proportional to 21,003,317.37, 31,462,952.85 and 16,692,641.96

Step by Step Solution

1. Step 1: Write the proportion equation
   21,003,317.37 : 31,462,952.85 = 16,692,641.96 : x
2. Step 2: Convert to fraction form
   21,003,317.37/31,462,952.85 = 16,692,641.96/x
3. Step 3: Cross multiply
   21,003,317.37x = 31,462,952.85 × 16,692,641.96
4. Step 4: Simplify right side
   21,003,317.37x = 525,199,806,772,096.88
5. Step 5: Solve for x
   x = 525,199,806,772,096.88/21,003,317.37
6. Step 6: Final answer
   x = 25,005,564.48