Finding the Fourth Proportional to 8,985.60, 12,396.72 and 5,447.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,985.60 : 12,396.72 = 5,447.52 : x
2. Step 2: Convert to fraction form
   8,985.60/12,396.72 = 5,447.52/x
3. Step 3: Cross multiply
   8,985.60x = 12,396.72 × 5,447.52
4. Step 4: Simplify right side
   8,985.60x = 67,531,380.13
5. Step 5: Solve for x
   x = 67,531,380.13/8,985.60
6. Step 6: Final answer
   x = 7,515.51