Finding the Fourth Proportional to 11,382.60, 17,079.06 and 5,139.24

Step by Step Solution

1. Step 1: Write the proportion equation
   11,382.60 : 17,079.06 = 5,139.24 : x
2. Step 2: Convert to fraction form
   11,382.60/17,079.06 = 5,139.24/x
3. Step 3: Cross multiply
   11,382.60x = 17,079.06 × 5,139.24
4. Step 4: Simplify right side
   11,382.60x = 87,773,388.31
5. Step 5: Solve for x
   x = 87,773,388.31/11,382.60
6. Step 6: Final answer
   x = 7,711.19