Finding the Fourth Proportional to 10,361.20, 14,298.28 and 5,645.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,361.20 : 14,298.28 = 5,645.52 : x
2. Step 2: Convert to fraction form
   10,361.20/14,298.28 = 5,645.52/x
3. Step 3: Cross multiply
   10,361.20x = 14,298.28 × 5,645.52
4. Step 4: Simplify right side
   10,361.20x = 80,721,225.71
5. Step 5: Solve for x
   x = 80,721,225.71/10,361.20
6. Step 6: Final answer
   x = 7,790.72