Finding the Fourth Proportional to 12,659.33, 18,974.52 and 7,718.00

Step by Step Solution

1. Step 1: Write the proportion equation
   12,659.33 : 18,974.52 = 7,718.00 : x
2. Step 2: Convert to fraction form
   12,659.33/18,974.52 = 7,718.00/x
3. Step 3: Cross multiply
   12,659.33x = 18,974.52 × 7,718.00
4. Step 4: Simplify right side
   12,659.33x = 146,445,250.49
5. Step 5: Solve for x
   x = 146,445,250.49/12,659.33
6. Step 6: Final answer
   x = 11,568.17