Finding the Fourth Proportional to 12,572.82, 17,342.10 and 9,581.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,572.82 : 17,342.10 = 9,581.76 : x
2. Step 2: Convert to fraction form
   12,572.82/17,342.10 = 9,581.76/x
3. Step 3: Cross multiply
   12,572.82x = 17,342.10 × 9,581.76
4. Step 4: Simplify right side
   12,572.82x = 166,167,840.10
5. Step 5: Solve for x
   x = 166,167,840.10/12,572.82
6. Step 6: Final answer
   x = 13,216.43