Finding the Fourth Proportional to 13,276.71, 18,319.72 and 7,610.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,276.71 : 18,319.72 = 7,610.42 : x
2. Step 2: Convert to fraction form
   13,276.71/18,319.72 = 7,610.42/x
3. Step 3: Cross multiply
   13,276.71x = 18,319.72 × 7,610.42
4. Step 4: Simplify right side
   13,276.71x = 139,420,721.56
5. Step 5: Solve for x
   x = 139,420,721.56/13,276.71
6. Step 6: Final answer
   x = 10,501.15