Finding the Fourth Proportional to 21,116,672.00, 31,686,990.71 and 11,401,155.51

Step by Step Solution

1. Step 1: Write the proportion equation
   21,116,672.00 : 31,686,990.71 = 11,401,155.51 : x
2. Step 2: Convert to fraction form
   21,116,672.00/31,686,990.71 = 11,401,155.51/x
3. Step 3: Cross multiply
   21,116,672.00x = 31,686,990.71 × 11,401,155.51
4. Step 4: Simplify right side
   21,116,672.00x = 361,268,308,552,803.31
5. Step 5: Solve for x
   x = 361,268,308,552,803.31/21,116,672.00
6. Step 6: Final answer
   x = 17,108,202.87