Finding the Fourth Proportional to 10,320.80, 14,242.72 and 5,605.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,320.80 : 14,242.72 = 5,605.08 : x
2. Step 2: Convert to fraction form
   10,320.80/14,242.72 = 5,605.08/x
3. Step 3: Cross multiply
   10,320.80x = 14,242.72 × 5,605.08
4. Step 4: Simplify right side
   10,320.80x = 79,831,585.02
5. Step 5: Solve for x
   x = 79,831,585.02/10,320.80
6. Step 6: Final answer
   x = 7,735.02