Finding the Fourth Proportional to 8,956.29, 12,359.96 and 5,417.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,956.29 : 12,359.96 = 5,417.47 : x
2. Step 2: Convert to fraction form
   8,956.29/12,359.96 = 5,417.47/x
3. Step 3: Cross multiply
   8,956.29x = 12,359.96 × 5,417.47
4. Step 4: Simplify right side
   8,956.29x = 66,959,712.50
5. Step 5: Solve for x
   x = 66,959,712.50/8,956.29
6. Step 6: Final answer
   x = 7,476.28