Finding the Fourth Proportional to 12,225.78, 18,332.78 and 5,978.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,225.78 : 18,332.78 = 5,978.48 : x
2. Step 2: Convert to fraction form
   12,225.78/18,332.78 = 5,978.48/x
3. Step 3: Cross multiply
   12,225.78x = 18,332.78 × 5,978.48
4. Step 4: Simplify right side
   12,225.78x = 109,602,158.57
5. Step 5: Solve for x
   x = 109,602,158.57/12,225.78
6. Step 6: Final answer
   x = 8,964.84