Finding the Fourth Proportional to 10,002.57, 15,003.99 and 9,393.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,002.57 : 15,003.99 = 9,393.72 : x
2. Step 2: Convert to fraction form
   10,002.57/15,003.99 = 9,393.72/x
3. Step 3: Cross multiply
   10,002.57x = 15,003.99 × 9,393.72
4. Step 4: Simplify right side
   10,002.57x = 140,943,280.94
5. Step 5: Solve for x
   x = 140,943,280.94/10,002.57
6. Step 6: Final answer
   x = 14,090.71