Finding the Fourth Proportional to 12,830.50, 17,703.93 and 8,574.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,830.50 : 17,703.93 = 8,574.72 : x
2. Step 2: Convert to fraction form
   12,830.50/17,703.93 = 8,574.72/x
3. Step 3: Cross multiply
   12,830.50x = 17,703.93 × 8,574.72
4. Step 4: Simplify right side
   12,830.50x = 151,806,242.65
5. Step 5: Solve for x
   x = 151,806,242.65/12,830.50
6. Step 6: Final answer
   x = 11,831.67