Finding the Fourth Proportional to 39,146.52, 58,719.69 and 19,438.86

Step by Step Solution

1. Step 1: Write the proportion equation
   39,146.52 : 58,719.69 = 19,438.86 : x
2. Step 2: Convert to fraction form
   39,146.52/58,719.69 = 19,438.86/x
3. Step 3: Cross multiply
   39,146.52x = 58,719.69 × 19,438.86
4. Step 4: Simplify right side
   39,146.52x = 1,141,443,833.15
5. Step 5: Solve for x
   x = 1,141,443,833.15/39,146.52
6. Step 6: Final answer
   x = 29,158.25