Finding the Fourth Proportional to 12,931.70, 17,844.57 and 7,266.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,931.70 : 17,844.57 = 7,266.42 : x
2. Step 2: Convert to fraction form
   12,931.70/17,844.57 = 7,266.42/x
3. Step 3: Cross multiply
   12,931.70x = 17,844.57 × 7,266.42
4. Step 4: Simplify right side
   12,931.70x = 129,666,140.34
5. Step 5: Solve for x
   x = 129,666,140.34/12,931.70
6. Step 6: Final answer
   x = 10,027.00