Finding the Fourth Proportional to 9,186.42, 12,683.34 and 7,058.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,186.42 : 12,683.34 = 7,058.15 : x
2. Step 2: Convert to fraction form
   9,186.42/12,683.34 = 7,058.15/x
3. Step 3: Cross multiply
   9,186.42x = 12,683.34 × 7,058.15
4. Step 4: Simplify right side
   9,186.42x = 89,520,852.80
5. Step 5: Solve for x
   x = 89,520,852.80/9,186.42
6. Step 6: Final answer
   x = 9,744.91