Finding the Fourth Proportional to 12,806.03, 17,672.11 and 7,499.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,806.03 : 17,672.11 = 7,499.72 : x
2. Step 2: Convert to fraction form
   12,806.03/17,672.11 = 7,499.72/x
3. Step 3: Cross multiply
   12,806.03x = 17,672.11 × 7,499.72
4. Step 4: Simplify right side
   12,806.03x = 132,535,769.70
5. Step 5: Solve for x
   x = 132,535,769.70/12,806.03
6. Step 6: Final answer
   x = 10,349.49