Finding the Fourth Proportional to 13,276.04, 18,319.90 and 7,610.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,276.04 : 18,319.90 = 7,610.72 : x
2. Step 2: Convert to fraction form
   13,276.04/18,319.90 = 7,610.72/x
3. Step 3: Cross multiply
   13,276.04x = 18,319.90 × 7,610.72
4. Step 4: Simplify right side
   13,276.04x = 139,427,629.33
5. Step 5: Solve for x
   x = 139,427,629.33/13,276.04
6. Step 6: Final answer
   x = 10,502.20