Finding the Fourth Proportional to 8,867.61, 12,242.39 and 5,887.53

Step by Step Solution

1. Step 1: Write the proportion equation
   8,867.61 : 12,242.39 = 5,887.53 : x
2. Step 2: Convert to fraction form
   8,867.61/12,242.39 = 5,887.53/x
3. Step 3: Cross multiply
   8,867.61x = 12,242.39 × 5,887.53
4. Step 4: Simplify right side
   8,867.61x = 72,077,408.96
5. Step 5: Solve for x
   x = 72,077,408.96/8,867.61
6. Step 6: Final answer
   x = 8,128.17