Finding the Fourth Proportional to 12,715.82, 17,548.86 and 7,339.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,715.82 : 17,548.86 = 7,339.22 : x
2. Step 2: Convert to fraction form
   12,715.82/17,548.86 = 7,339.22/x
3. Step 3: Cross multiply
   12,715.82x = 17,548.86 × 7,339.22
4. Step 4: Simplify right side
   12,715.82x = 128,794,944.29
5. Step 5: Solve for x
   x = 128,794,944.29/12,715.82
6. Step 6: Final answer
   x = 10,128.72