Finding the Fourth Proportional to 39,103.56, 58,663.85 and 12,807.32

Step by Step Solution

1. Step 1: Write the proportion equation
   39,103.56 : 58,663.85 = 12,807.32 : x
2. Step 2: Convert to fraction form
   39,103.56/58,663.85 = 12,807.32/x
3. Step 3: Cross multiply
   39,103.56x = 58,663.85 × 12,807.32
4. Step 4: Simplify right side
   39,103.56x = 751,326,342.03
5. Step 5: Solve for x
   x = 751,326,342.03/39,103.56
6. Step 6: Final answer
   x = 19,213.76