Finding the Fourth Proportional to 12,009.32, 17,997.61 and 7,618.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,009.32 : 17,997.61 = 7,618.92 : x
2. Step 2: Convert to fraction form
   12,009.32/17,997.61 = 7,618.92/x
3. Step 3: Cross multiply
   12,009.32x = 17,997.61 × 7,618.92
4. Step 4: Simplify right side
   12,009.32x = 137,122,350.78
5. Step 5: Solve for x
   x = 137,122,350.78/12,009.32
6. Step 6: Final answer
   x = 11,417.99