Finding the Fourth Proportional to 13,087.92, 18,061.25 and 7,423.77

Step by Step Solution

1. Step 1: Write the proportion equation
   13,087.92 : 18,061.25 = 7,423.77 : x
2. Step 2: Convert to fraction form
   13,087.92/18,061.25 = 7,423.77/x
3. Step 3: Cross multiply
   13,087.92x = 18,061.25 × 7,423.77
4. Step 4: Simplify right side
   13,087.92x = 134,082,528.79
5. Step 5: Solve for x
   x = 134,082,528.79/13,087.92
6. Step 6: Final answer
   x = 10,244.75