Finding the Fourth Proportional to 10,434.48, 15,642.80 and 5,167.04

Step by Step Solution

1. Step 1: Write the proportion equation
   10,434.48 : 15,642.80 = 5,167.04 : x
2. Step 2: Convert to fraction form
   10,434.48/15,642.80 = 5,167.04/x
3. Step 3: Cross multiply
   10,434.48x = 15,642.80 × 5,167.04
4. Step 4: Simplify right side
   10,434.48x = 80,826,973.31
5. Step 5: Solve for x
   x = 80,826,973.31/10,434.48
6. Step 6: Final answer
   x = 7,746.14