Finding the Fourth Proportional to 9,131.60, 12,601.37 and 5,152.65

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131.60 : 12,601.37 = 5,152.65 : x
2. Step 2: Convert to fraction form
   9,131.60/12,601.37 = 5,152.65/x
3. Step 3: Cross multiply
   9,131.60x = 12,601.37 × 5,152.65
4. Step 4: Simplify right side
   9,131.60x = 64,930,414.76
5. Step 5: Solve for x
   x = 64,930,414.76/9,131.60
6. Step 6: Final answer
   x = 7,110.52