Finding the Fourth Proportional to 9,153.32, 12,632.28 and 5,174.87

Step by Step Solution

1. Step 1: Write the proportion equation
   9,153.32 : 12,632.28 = 5,174.87 : x
2. Step 2: Convert to fraction form
   9,153.32/12,632.28 = 5,174.87/x
3. Step 3: Cross multiply
   9,153.32x = 12,632.28 × 5,174.87
4. Step 4: Simplify right side
   9,153.32x = 65,370,406.80
5. Step 5: Solve for x
   x = 65,370,406.80/9,153.32
6. Step 6: Final answer
   x = 7,141.72