Finding the Fourth Proportional to 13,259.52, 18,293.76 and 7,666.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,259.52 : 18,293.76 = 7,666.56 : x
2. Step 2: Convert to fraction form
   13,259.52/18,293.76 = 7,666.56/x
3. Step 3: Cross multiply
   13,259.52x = 18,293.76 × 7,666.56
4. Step 4: Simplify right side
   13,259.52x = 140,250,208.67
5. Step 5: Solve for x
   x = 140,250,208.67/13,259.52
6. Step 6: Final answer
   x = 10,577.32