Finding the Fourth Proportional to 12,731.37, 17,569.31 and 7,066.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,731.37 : 17,569.31 = 7,066.20 : x
2. Step 2: Convert to fraction form
   12,731.37/17,569.31 = 7,066.20/x
3. Step 3: Cross multiply
   12,731.37x = 17,569.31 × 7,066.20
4. Step 4: Simplify right side
   12,731.37x = 124,148,258.32
5. Step 5: Solve for x
   x = 124,148,258.32/12,731.37
6. Step 6: Final answer
   x = 9,751.37