Finding the Fourth Proportional to 12,280.72, 18,415.98 and 7,593.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,280.72 : 18,415.98 = 7,593.86 : x
2. Step 2: Convert to fraction form
   12,280.72/18,415.98 = 7,593.86/x
3. Step 3: Cross multiply
   12,280.72x = 18,415.98 × 7,593.86
4. Step 4: Simplify right side
   12,280.72x = 139,848,373.88
5. Step 5: Solve for x
   x = 139,848,373.88/12,280.72
6. Step 6: Final answer
   x = 11,387.64