Finding the Fourth Proportional to 10,028.18, 13,840.34 and 5,778.43

Step by Step Solution

1. Step 1: Write the proportion equation
   10,028.18 : 13,840.34 = 5,778.43 : x
2. Step 2: Convert to fraction form
   10,028.18/13,840.34 = 5,778.43/x
3. Step 3: Cross multiply
   10,028.18x = 13,840.34 × 5,778.43
4. Step 4: Simplify right side
   10,028.18x = 79,975,337.77
5. Step 5: Solve for x
   x = 79,975,337.77/10,028.18
6. Step 6: Final answer
   x = 7,975.06