Finding the Fourth Proportional to 8,320.02, 12,406.98 and 7,066.14

Step by Step Solution

1. Step 1: Write the proportion equation
   8,320.02 : 12,406.98 = 7,066.14 : x
2. Step 2: Convert to fraction form
   8,320.02/12,406.98 = 7,066.14/x
3. Step 3: Cross multiply
   8,320.02x = 12,406.98 × 7,066.14
4. Step 4: Simplify right side
   8,320.02x = 87,669,457.66
5. Step 5: Solve for x
   x = 87,669,457.66/8,320.02
6. Step 6: Final answer
   x = 10,537.17