Finding the Fourth Proportional to 13,586.27, 18,748.82 and 7,617.92

Step by Step Solution

1. Step 1: Write the proportion equation
   13,586.27 : 18,748.82 = 7,617.92 : x
2. Step 2: Convert to fraction form
   13,586.27/18,748.82 = 7,617.92/x
3. Step 3: Cross multiply
   13,586.27x = 18,748.82 × 7,617.92
4. Step 4: Simplify right side
   13,586.27x = 142,826,972.76
5. Step 5: Solve for x
   x = 142,826,972.76/13,586.27
6. Step 6: Final answer
   x = 10,512.60