Finding the Fourth Proportional to 9,152.88, 12,631.68 and 5,174.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,152.88 : 12,631.68 = 5,174.07 : x
2. Step 2: Convert to fraction form
   9,152.88/12,631.68 = 5,174.07/x
3. Step 3: Cross multiply
   9,152.88x = 12,631.68 × 5,174.07
4. Step 4: Simplify right side
   9,152.88x = 65,357,196.54
5. Step 5: Solve for x
   x = 65,357,196.54/9,152.88
6. Step 6: Final answer
   x = 7,140.62