Finding the Fourth Proportional to 8,947.89, 12,307.01 and 7,175.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,947.89 : 12,307.01 = 7,175.61 : x
2. Step 2: Convert to fraction form
   8,947.89/12,307.01 = 7,175.61/x
3. Step 3: Cross multiply
   8,947.89x = 12,307.01 × 7,175.61
4. Step 4: Simplify right side
   8,947.89x = 88,310,268.15
5. Step 5: Solve for x
   x = 88,310,268.15/8,947.89
6. Step 6: Final answer
   x = 9,869.40