Finding the Fourth Proportional to 9,131.52, 12,601.89 and 5,152.65

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131.52 : 12,601.89 = 5,152.65 : x
2. Step 2: Convert to fraction form
   9,131.52/12,601.89 = 5,152.65/x
3. Step 3: Cross multiply
   9,131.52x = 12,601.89 × 5,152.65
4. Step 4: Simplify right side
   9,131.52x = 64,933,128.51
5. Step 5: Solve for x
   x = 64,933,128.51/9,131.52
6. Step 6: Final answer
   x = 7,110.88