Finding the Fourth Proportional to 12,805.72, 17,664.76 and 7,499.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,805.72 : 17,664.76 = 7,499.52 : x
2. Step 2: Convert to fraction form
   12,805.72/17,664.76 = 7,499.52/x
3. Step 3: Cross multiply
   12,805.72x = 17,664.76 × 7,499.52
4. Step 4: Simplify right side
   12,805.72x = 132,477,220.92
5. Step 5: Solve for x
   x = 132,477,220.92/12,805.72
6. Step 6: Final answer
   x = 10,345.16