Finding the Fourth Proportional to 7,490.52, 10,328.94 and 5,128.92

Step by Step Solution

1. Step 1: Write the proportion equation
   7,490.52 : 10,328.94 = 5,128.92 : x
2. Step 2: Convert to fraction form
   7,490.52/10,328.94 = 5,128.92/x
3. Step 3: Cross multiply
   7,490.52x = 10,328.94 × 5,128.92
4. Step 4: Simplify right side
   7,490.52x = 52,976,306.94
5. Step 5: Solve for x
   x = 52,976,306.94/7,490.52
6. Step 6: Final answer
   x = 7,072.45