Finding the Fourth Proportional to 12,731.58, 17,567.28 and 7,065.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,731.58 : 17,567.28 = 7,065.63 : x
2. Step 2: Convert to fraction form
   12,731.58/17,567.28 = 7,065.63/x
3. Step 3: Cross multiply
   12,731.58x = 17,567.28 × 7,065.63
4. Step 4: Simplify right side
   12,731.58x = 124,123,900.59
5. Step 5: Solve for x
   x = 124,123,900.59/12,731.58
6. Step 6: Final answer
   x = 9,749.29