Finding the Fourth Proportional to 12,155.58, 16,773.75 and 7,439.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,155.58 : 16,773.75 = 7,439.22 : x
2. Step 2: Convert to fraction form
   12,155.58/16,773.75 = 7,439.22/x
3. Step 3: Cross multiply
   12,155.58x = 16,773.75 × 7,439.22
4. Step 4: Simplify right side
   12,155.58x = 124,783,616.48
5. Step 5: Solve for x
   x = 124,783,616.48/12,155.58
6. Step 6: Final answer
   x = 10,265.54