Finding the Fourth Proportional to 12,579.17, 17,360.06 and 7,543.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,579.17 : 17,360.06 = 7,543.60 : x
2. Step 2: Convert to fraction form
   12,579.17/17,360.06 = 7,543.60/x
3. Step 3: Cross multiply
   12,579.17x = 17,360.06 × 7,543.60
4. Step 4: Simplify right side
   12,579.17x = 130,957,267.50
5. Step 5: Solve for x
   x = 130,957,267.50/12,579.17
6. Step 6: Final answer
   x = 10,410.65