Finding the Fourth Proportional to 12,784.42, 17,643.86 and 7,483.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,784.42 : 17,643.86 = 7,483.68 : x
2. Step 2: Convert to fraction form
   12,784.42/17,643.86 = 7,483.68/x
3. Step 3: Cross multiply
   12,784.42x = 17,643.86 × 7,483.68
4. Step 4: Simplify right side
   12,784.42x = 132,041,020.91
5. Step 5: Solve for x
   x = 132,041,020.91/12,784.42
6. Step 6: Final answer
   x = 10,328.28