Finding the Fourth Proportional to 8,961.39, 12,366.96 and 5,422.53

Step by Step Solution

1. Step 1: Write the proportion equation
   8,961.39 : 12,366.96 = 5,422.53 : x
2. Step 2: Convert to fraction form
   8,961.39/12,366.96 = 5,422.53/x
3. Step 3: Cross multiply
   8,961.39x = 12,366.96 × 5,422.53
4. Step 4: Simplify right side
   8,961.39x = 67,060,211.61
5. Step 5: Solve for x
   x = 67,060,211.61/8,961.39
6. Step 6: Final answer
   x = 7,483.24