Finding the Fourth Proportional to 8,934.32, 12,329.91 and 5,158.17

Step by Step Solution

1. Step 1: Write the proportion equation
   8,934.32 : 12,329.91 = 5,158.17 : x
2. Step 2: Convert to fraction form
   8,934.32/12,329.91 = 5,158.17/x
3. Step 3: Cross multiply
   8,934.32x = 12,329.91 × 5,158.17
4. Step 4: Simplify right side
   8,934.32x = 63,599,784.76
5. Step 5: Solve for x
   x = 63,599,784.76/8,934.32
6. Step 6: Final answer
   x = 7,118.60