Finding the Fourth Proportional to 10,947.32, 15,107.65 and 5,979.32

Step by Step Solution

1. Step 1: Write the proportion equation
   10,947.32 : 15,107.65 = 5,979.32 : x
2. Step 2: Convert to fraction form
   10,947.32/15,107.65 = 5,979.32/x
3. Step 3: Cross multiply
   10,947.32x = 15,107.65 × 5,979.32
4. Step 4: Simplify right side
   10,947.32x = 90,333,398.26
5. Step 5: Solve for x
   x = 90,333,398.26/10,947.32
6. Step 6: Final answer
   x = 8,251.65