Finding the Fourth Proportional to 12,250.86, 18,366.57 and 5,320.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,250.86 : 18,366.57 = 5,320.50 : x
2. Step 2: Convert to fraction form
   12,250.86/18,366.57 = 5,320.50/x
3. Step 3: Cross multiply
   12,250.86x = 18,366.57 × 5,320.50
4. Step 4: Simplify right side
   12,250.86x = 97,719,335.69
5. Step 5: Solve for x
   x = 97,719,335.69/12,250.86
6. Step 6: Final answer
   x = 7,976.53