Finding the Fourth Proportional to 9,490.90, 13,102.77 and 5,715.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,490.90 : 13,102.77 = 5,715.10 : x
2. Step 2: Convert to fraction form
   9,490.90/13,102.77 = 5,715.10/x
3. Step 3: Cross multiply
   9,490.90x = 13,102.77 × 5,715.10
4. Step 4: Simplify right side
   9,490.90x = 74,883,640.83
5. Step 5: Solve for x
   x = 74,883,640.83/9,490.90
6. Step 6: Final answer
   x = 7,890.05