Finding the Fourth Proportional to 34,742.72, 52,103.40 and 12,553.28

Step by Step Solution

1. Step 1: Write the proportion equation
   34,742.72 : 52,103.40 = 12,553.28 : x
2. Step 2: Convert to fraction form
   34,742.72/52,103.40 = 12,553.28/x
3. Step 3: Cross multiply
   34,742.72x = 52,103.40 × 12,553.28
4. Step 4: Simplify right side
   34,742.72x = 654,068,569.15
5. Step 5: Solve for x
   x = 654,068,569.15/34,742.72
6. Step 6: Final answer
   x = 18,826.06