Finding the Fourth Proportional to 21,185,669.54, 31,738,394.72 and 12,523,837.34

Step by Step Solution

1. Step 1: Write the proportion equation
   21,185,669.54 : 31,738,394.72 = 12,523,837.34 : x
2. Step 2: Convert to fraction form
   21,185,669.54/31,738,394.72 = 12,523,837.34/x
3. Step 3: Cross multiply
   21,185,669.54x = 31,738,394.72 × 12,523,837.34
4. Step 4: Simplify right side
   21,185,669.54x = 397,486,492,905,994.81
5. Step 5: Solve for x
   x = 397,486,492,905,994.81/21,185,669.54
6. Step 6: Final answer
   x = 18,762,045.36