Finding the Fourth Proportional to 7,421.39, 10,230.69 and 5,649.92

Step by Step Solution

1. Step 1: Write the proportion equation
   7,421.39 : 10,230.69 = 5,649.92 : x
2. Step 2: Convert to fraction form
   7,421.39/10,230.69 = 5,649.92/x
3. Step 3: Cross multiply
   7,421.39x = 10,230.69 × 5,649.92
4. Step 4: Simplify right side
   7,421.39x = 57,802,528.89
5. Step 5: Solve for x
   x = 57,802,528.89/7,421.39
6. Step 6: Final answer
   x = 7,788.64