Finding the Fourth Proportional to 9,494.31, 13,101.21 and 5,515.59

Step by Step Solution

1. Step 1: Write the proportion equation
   9,494.31 : 13,101.21 = 5,515.59 : x
2. Step 2: Convert to fraction form
   9,494.31/13,101.21 = 5,515.59/x
3. Step 3: Cross multiply
   9,494.31x = 13,101.21 × 5,515.59
4. Step 4: Simplify right side
   9,494.31x = 72,260,902.86
5. Step 5: Solve for x
   x = 72,260,902.86/9,494.31
6. Step 6: Final answer
   x = 7,610.97