Finding the Fourth Proportional to 42,002.72, 62,982.20 and 19,810.13

Step by Step Solution

1. Step 1: Write the proportion equation
   42,002.72 : 62,982.20 = 19,810.13 : x
2. Step 2: Convert to fraction form
   42,002.72/62,982.20 = 19,810.13/x
3. Step 3: Cross multiply
   42,002.72x = 62,982.20 × 19,810.13
4. Step 4: Simplify right side
   42,002.72x = 1,247,685,470.64
5. Step 5: Solve for x
   x = 1,247,685,470.64/42,002.72
6. Step 6: Final answer
   x = 29,704.87