Finding the Fourth Proportional to 13,462.72, 18,581.28 and 7,875.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,462.72 : 18,581.28 = 7,875.52 : x
2. Step 2: Convert to fraction form
   13,462.72/18,581.28 = 7,875.52/x
3. Step 3: Cross multiply
   13,462.72x = 18,581.28 × 7,875.52
4. Step 4: Simplify right side
   13,462.72x = 146,337,242.27
5. Step 5: Solve for x
   x = 146,337,242.27/13,462.72
6. Step 6: Final answer
   x = 10,869.81