Finding the Fourth Proportional to 10,219.78, 14,110.25 and 7,531.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,219.78 : 14,110.25 = 7,531.31 : x
2. Step 2: Convert to fraction form
   10,219.78/14,110.25 = 7,531.31/x
3. Step 3: Cross multiply
   10,219.78x = 14,110.25 × 7,531.31
4. Step 4: Simplify right side
   10,219.78x = 106,268,677.15
5. Step 5: Solve for x
   x = 106,268,677.15/10,219.78
6. Step 6: Final answer
   x = 10,398.33