Finding the Fourth Proportional to 10,958.45, 15,123.42 and 6,242.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,958.45 : 15,123.42 = 6,242.72 : x
2. Step 2: Convert to fraction form
   10,958.45/15,123.42 = 6,242.72/x
3. Step 3: Cross multiply
   10,958.45x = 15,123.42 × 6,242.72
4. Step 4: Simplify right side
   10,958.45x = 94,411,314.31
5. Step 5: Solve for x
   x = 94,411,314.31/10,958.45
6. Step 6: Final answer
   x = 8,615.39