Finding the Fourth Proportional to 12,489.93, 17,233.56 and 7,953.93

Step by Step Solution

1. Step 1: Write the proportion equation
   12,489.93 : 17,233.56 = 7,953.93 : x
2. Step 2: Convert to fraction form
   12,489.93/17,233.56 = 7,953.93/x
3. Step 3: Cross multiply
   12,489.93x = 17,233.56 × 7,953.93
4. Step 4: Simplify right side
   12,489.93x = 137,074,529.89
5. Step 5: Solve for x
   x = 137,074,529.89/12,489.93
6. Step 6: Final answer
   x = 10,974.80