Finding the Fourth Proportional to 9,120.52, 12,586.18 and 5,141.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,120.52 : 12,586.18 = 5,141.80 : x
2. Step 2: Convert to fraction form
   9,120.52/12,586.18 = 5,141.80/x
3. Step 3: Cross multiply
   9,120.52x = 12,586.18 × 5,141.80
4. Step 4: Simplify right side
   9,120.52x = 64,715,620.32
5. Step 5: Solve for x
   x = 64,715,620.32/9,120.52
6. Step 6: Final answer
   x = 7,095.61