Finding the Fourth Proportional to 8,967.43, 12,381.15 and 5,611.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,967.43 : 12,381.15 = 5,611.60 : x
2. Step 2: Convert to fraction form
   8,967.43/12,381.15 = 5,611.60/x
3. Step 3: Cross multiply
   8,967.43x = 12,381.15 × 5,611.60
4. Step 4: Simplify right side
   8,967.43x = 69,478,061.34
5. Step 5: Solve for x
   x = 69,478,061.34/8,967.43
6. Step 6: Final answer
   x = 7,747.82