Finding the Fourth Proportional to 10,669.12, 14,705.74 and 7,131.04

Step by Step Solution

1. Step 1: Write the proportion equation
   10,669.12 : 14,705.74 = 7,131.04 : x
2. Step 2: Convert to fraction form
   10,669.12/14,705.74 = 7,131.04/x
3. Step 3: Cross multiply
   10,669.12x = 14,705.74 × 7,131.04
4. Step 4: Simplify right side
   10,669.12x = 104,867,220.17
5. Step 5: Solve for x
   x = 104,867,220.17/10,669.12
6. Step 6: Final answer
   x = 9,829.04