Finding the Fourth Proportional to 12,690,400.01, 17,512,773.75 and 7,257,892.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,690,400.01 : 17,512,773.75 = 7,257,892.01 : x
2. Step 2: Convert to fraction form
   12,690,400.01/17,512,773.75 = 7,257,892.01/x
3. Step 3: Cross multiply
   12,690,400.01x = 17,512,773.75 × 7,257,892.01
4. Step 4: Simplify right side
   12,690,400.01x = 127,105,820,585,498.86
5. Step 5: Solve for x
   x = 127,105,820,585,498.86/12,690,400.01
6. Step 6: Final answer
   x = 10,015,903.40