Finding the Fourth Proportional to 34,155.52, 51,235.92 and 13,105.64

Step by Step Solution

1. Step 1: Write the proportion equation
   34,155.52 : 51,235.92 = 13,105.64 : x
2. Step 2: Convert to fraction form
   34,155.52/51,235.92 = 13,105.64/x
3. Step 3: Cross multiply
   34,155.52x = 51,235.92 × 13,105.64
4. Step 4: Simplify right side
   34,155.52x = 671,479,522.59
5. Step 5: Solve for x
   x = 671,479,522.59/34,155.52
6. Step 6: Final answer
   x = 19,659.47