Finding the Fourth Proportional to 9,617.88, 13,281.66 and 7,077.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,617.88 : 13,281.66 = 7,077.72 : x
2. Step 2: Convert to fraction form
   9,617.88/13,281.66 = 7,077.72/x
3. Step 3: Cross multiply
   9,617.88x = 13,281.66 × 7,077.72
4. Step 4: Simplify right side
   9,617.88x = 94,003,870.62
5. Step 5: Solve for x
   x = 94,003,870.62/9,617.88
6. Step 6: Final answer
   x = 9,773.87