Finding the Fourth Proportional to 42,072.20, 63,108 and 10,482.04

Step by Step Solution

1. Step 1: Write the proportion equation
   42,072.20 : 63,108 = 10,482.04 : x
2. Step 2: Convert to fraction form
   42,072.20/63,108 = 10,482.04/x
3. Step 3: Cross multiply
   42,072.20x = 63,108 × 10,482.04
4. Step 4: Simplify right side
   42,072.20x = 661,500,580.32
5. Step 5: Solve for x
   x = 661,500,580.32/42,072.20
6. Step 6: Final answer
   x = 15,722.99