Finding the Fourth Proportional to 12,666.96, 17,480.28 and 7,077.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,666.96 : 17,480.28 = 7,077.96 : x
2. Step 2: Convert to fraction form
   12,666.96/17,480.28 = 7,077.96/x
3. Step 3: Cross multiply
   12,666.96x = 17,480.28 × 7,077.96
4. Step 4: Simplify right side
   12,666.96x = 123,724,722.63
5. Step 5: Solve for x
   x = 123,724,722.63/12,666.96
6. Step 6: Final answer
   x = 9,767.52