Finding the Fourth Proportional to 34,380.16, 51,575.18 and 13,040.72

Step by Step Solution

1. Step 1: Write the proportion equation
   34,380.16 : 51,575.18 = 13,040.72 : x
2. Step 2: Convert to fraction form
   34,380.16/51,575.18 = 13,040.72/x
3. Step 3: Cross multiply
   34,380.16x = 51,575.18 × 13,040.72
4. Step 4: Simplify right side
   34,380.16x = 672,577,481.33
5. Step 5: Solve for x
   x = 672,577,481.33/34,380.16
6. Step 6: Final answer
   x = 19,562.95