Finding the Fourth Proportional to 12,298.02, 16,968.72 and 7,820.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,298.02 : 16,968.72 = 7,820.16 : x
2. Step 2: Convert to fraction form
   12,298.02/16,968.72 = 7,820.16/x
3. Step 3: Cross multiply
   12,298.02x = 16,968.72 × 7,820.16
4. Step 4: Simplify right side
   12,298.02x = 132,698,105.40
5. Step 5: Solve for x
   x = 132,698,105.40/12,298.02
6. Step 6: Final answer
   x = 10,790.20