Finding the Fourth Proportional to 42,418.76, 63,627.49 and 10,398.15

Step by Step Solution

1. Step 1: Write the proportion equation
   42,418.76 : 63,627.49 = 10,398.15 : x
2. Step 2: Convert to fraction form
   42,418.76/63,627.49 = 10,398.15/x
3. Step 3: Cross multiply
   42,418.76x = 63,627.49 × 10,398.15
4. Step 4: Simplify right side
   42,418.76x = 661,608,185.14
5. Step 5: Solve for x
   x = 661,608,185.14/42,418.76
6. Step 6: Final answer
   x = 15,597.07