Finding the Fourth Proportional to 12,108.78, 16,710.75 and 7,392.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,108.78 : 16,710.75 = 7,392.78 : x
2. Step 2: Convert to fraction form
   12,108.78/16,710.75 = 7,392.78/x
3. Step 3: Cross multiply
   12,108.78x = 16,710.75 × 7,392.78
4. Step 4: Simplify right side
   12,108.78x = 123,538,898.39
5. Step 5: Solve for x
   x = 123,538,898.39/12,108.78
6. Step 6: Final answer
   x = 10,202.42