Finding the Fourth Proportional to 12,357.93, 17,061.69 and 9,519.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,357.93 : 17,061.69 = 9,519.96 : x
2. Step 2: Convert to fraction form
   12,357.93/17,061.69 = 9,519.96/x
3. Step 3: Cross multiply
   12,357.93x = 17,061.69 × 9,519.96
4. Step 4: Simplify right side
   12,357.93x = 162,426,558.73
5. Step 5: Solve for x
   x = 162,426,558.73/12,357.93
6. Step 6: Final answer
   x = 13,143.51