Finding the Fourth Proportional to 42,153.75, 63,234.27 and 10,989

Step by Step Solution

1. Step 1: Write the proportion equation
   42,153.75 : 63,234.27 = 10,989 : x
2. Step 2: Convert to fraction form
   42,153.75/63,234.27 = 10,989/x
3. Step 3: Cross multiply
   42,153.75x = 63,234.27 × 10,989
4. Step 4: Simplify right side
   42,153.75x = 694,881,393.03
5. Step 5: Solve for x
   x = 694,881,393.03/42,153.75
6. Step 6: Final answer
   x = 16,484.45