Finding the Fourth Proportional to 12,666.87, 17,480.28 and 7,362.03

Step by Step Solution

1. Step 1: Write the proportion equation
   12,666.87 : 17,480.28 = 7,362.03 : x
2. Step 2: Convert to fraction form
   12,666.87/17,480.28 = 7,362.03/x
3. Step 3: Cross multiply
   12,666.87x = 17,480.28 × 7,362.03
4. Step 4: Simplify right side
   12,666.87x = 128,690,345.77
5. Step 5: Solve for x
   x = 128,690,345.77/12,666.87
6. Step 6: Final answer
   x = 10,159.60