Finding the Fourth Proportional to 10,428.71, 15,603.81 and 7,314.79

Step by Step Solution

1. Step 1: Write the proportion equation
   10,428.71 : 15,603.81 = 7,314.79 : x
2. Step 2: Convert to fraction form
   10,428.71/15,603.81 = 7,314.79/x
3. Step 3: Cross multiply
   10,428.71x = 15,603.81 × 7,314.79
4. Step 4: Simplify right side
   10,428.71x = 114,138,593.35
5. Step 5: Solve for x
   x = 114,138,593.35/10,428.71
6. Step 6: Final answer
   x = 10,944.65