Finding the Fourth Proportional to 42,003.24, 62,982.90 and 12,417.08

Step by Step Solution

1. Step 1: Write the proportion equation
   42,003.24 : 62,982.90 = 12,417.08 : x
2. Step 2: Convert to fraction form
   42,003.24/62,982.90 = 12,417.08/x
3. Step 3: Cross multiply
   42,003.24x = 62,982.90 × 12,417.08
4. Step 4: Simplify right side
   42,003.24x = 782,063,707.93
5. Step 5: Solve for x
   x = 782,063,707.93/42,003.24
6. Step 6: Final answer
   x = 18,619.13