Finding the Fourth Proportional to 12,822.96, 17,700.48 and 9,984.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,822.96 : 17,700.48 = 9,984.72 : x
2. Step 2: Convert to fraction form
   12,822.96/17,700.48 = 9,984.72/x
3. Step 3: Cross multiply
   12,822.96x = 17,700.48 × 9,984.72
4. Step 4: Simplify right side
   12,822.96x = 176,734,336.67
5. Step 5: Solve for x
   x = 176,734,336.67/12,822.96
6. Step 6: Final answer
   x = 13,782.65