Finding the Fourth Proportional to 9,152.59, 12,630.50 and 5,174.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,152.59 : 12,630.50 = 5,174.48 : x
2. Step 2: Convert to fraction form
   9,152.59/12,630.50 = 5,174.48/x
3. Step 3: Cross multiply
   9,152.59x = 12,630.50 × 5,174.48
4. Step 4: Simplify right side
   9,152.59x = 65,356,243.77
5. Step 5: Solve for x
   x = 65,356,243.77/9,152.59
6. Step 6: Final answer
   x = 7,140.74