Finding the Fourth Proportional to 12,605,258.18, 17,403,301.24 and 10,287,687

Step by Step Solution

1. Step 1: Write the proportion equation
   12,605,258.18 : 17,403,301.24 = 10,287,687 : x
2. Step 2: Convert to fraction form
   12,605,258.18/17,403,301.24 = 10,287,687/x
3. Step 3: Cross multiply
   12,605,258.18x = 17,403,301.24 × 10,287,687
4. Step 4: Simplify right side
   12,605,258.18x = 179,039,715,923,831.88
5. Step 5: Solve for x
   x = 179,039,715,923,831.88/12,605,258.18
6. Step 6: Final answer
   x = 14,203,573.89