Finding the Fourth Proportional to 8,122.52, 12,174.51 and 3,439.59

Step by Step Solution

1. Step 1: Write the proportion equation
   8,122.52 : 12,174.51 = 3,439.59 : x
2. Step 2: Convert to fraction form
   8,122.52/12,174.51 = 3,439.59/x
3. Step 3: Cross multiply
   8,122.52x = 12,174.51 × 3,439.59
4. Step 4: Simplify right side
   8,122.52x = 41,875,322.85
5. Step 5: Solve for x
   x = 41,875,322.85/8,122.52
6. Step 6: Final answer
   x = 5,155.46