Finding the Fourth Proportional to 9,131.52, 12,601.12 and 5,776.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131.52 : 12,601.12 = 5,776.16 : x
2. Step 2: Convert to fraction form
   9,131.52/12,601.12 = 5,776.16/x
3. Step 3: Cross multiply
   9,131.52x = 12,601.12 × 5,776.16
4. Step 4: Simplify right side
   9,131.52x = 72,786,085.30
5. Step 5: Solve for x
   x = 72,786,085.30/9,131.52
6. Step 6: Final answer
   x = 7,970.86