Finding the Fourth Proportional to 39,103.52, 58,659.37 and 12,810.31

Step by Step Solution

1. Step 1: Write the proportion equation
   39,103.52 : 58,659.37 = 12,810.31 : x
2. Step 2: Convert to fraction form
   39,103.52/58,659.37 = 12,810.31/x
3. Step 3: Cross multiply
   39,103.52x = 58,659.37 × 12,810.31
4. Step 4: Simplify right side
   39,103.52x = 751,444,535.43
5. Step 5: Solve for x
   x = 751,444,535.43/39,103.52
6. Step 6: Final answer
   x = 19,216.80