Finding the Fourth Proportional to 13,061.76, 18,025.22 and 7,472.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,061.76 : 18,025.22 = 7,472.76 : x
2. Step 2: Convert to fraction form
   13,061.76/18,025.22 = 7,472.76/x
3. Step 3: Cross multiply
   13,061.76x = 18,025.22 × 7,472.76
4. Step 4: Simplify right side
   13,061.76x = 134,698,143.01
5. Step 5: Solve for x
   x = 134,698,143.01/13,061.76
6. Step 6: Final answer
   x = 10,312.40