Finding the Fourth Proportional to 10,058.81, 15,112.82 and 9,499.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,058.81 : 15,112.82 = 9,499.30 : x
2. Step 2: Convert to fraction form
   10,058.81/15,112.82 = 9,499.30/x
3. Step 3: Cross multiply
   10,058.81x = 15,112.82 × 9,499.30
4. Step 4: Simplify right side
   10,058.81x = 143,561,163.53
5. Step 5: Solve for x
   x = 143,561,163.53/10,058.81
6. Step 6: Final answer
   x = 14,272.18