Finding the Fourth Proportional to 11,785.56, 16,264.38 and 6,480.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,785.56 : 16,264.38 = 6,480.72 : x
2. Step 2: Convert to fraction form
   11,785.56/16,264.38 = 6,480.72/x
3. Step 3: Cross multiply
   11,785.56x = 16,264.38 × 6,480.72
4. Step 4: Simplify right side
   11,785.56x = 105,404,892.75
5. Step 5: Solve for x
   x = 105,404,892.75/11,785.56
6. Step 6: Final answer
   x = 8,943.56