Finding the Fourth Proportional to 9,115.62, 12,579.72 and 5,341.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,115.62 : 12,579.72 = 5,341.50 : x
2. Step 2: Convert to fraction form
   9,115.62/12,579.72 = 5,341.50/x
3. Step 3: Cross multiply
   9,115.62x = 12,579.72 × 5,341.50
4. Step 4: Simplify right side
   9,115.62x = 67,194,574.38
5. Step 5: Solve for x
   x = 67,194,574.38/9,115.62
6. Step 6: Final answer
   x = 7,371.37