Finding the Fourth Proportional to 10,443.90, 14,412.42 and 5,728.35

Step by Step Solution

1. Step 1: Write the proportion equation
   10,443.90 : 14,412.42 = 5,728.35 : x
2. Step 2: Convert to fraction form
   10,443.90/14,412.42 = 5,728.35/x
3. Step 3: Cross multiply
   10,443.90x = 14,412.42 × 5,728.35
4. Step 4: Simplify right side
   10,443.90x = 82,559,386.11
5. Step 5: Solve for x
   x = 82,559,386.11/10,443.90
6. Step 6: Final answer
   x = 7,905.03