Finding the Fourth Proportional to 39,146.83, 58,726.37 and 12,845.59

Step by Step Solution

1. Step 1: Write the proportion equation
   39,146.83 : 58,726.37 = 12,845.59 : x
2. Step 2: Convert to fraction form
   39,146.83/58,726.37 = 12,845.59/x
3. Step 3: Cross multiply
   39,146.83x = 58,726.37 × 12,845.59
4. Step 4: Simplify right side
   39,146.83x = 754,374,871.21
5. Step 5: Solve for x
   x = 754,374,871.21/39,146.83
6. Step 6: Final answer
   x = 19,270.39