Finding the Fourth Proportional to 10,089.15, 13,922.96 and 5,612.64

Step by Step Solution

1. Step 1: Write the proportion equation
   10,089.15 : 13,922.96 = 5,612.64 : x
2. Step 2: Convert to fraction form
   10,089.15/13,922.96 = 5,612.64/x
3. Step 3: Cross multiply
   10,089.15x = 13,922.96 × 5,612.64
4. Step 4: Simplify right side
   10,089.15x = 78,144,534.15
5. Step 5: Solve for x
   x = 78,144,534.15/10,089.15
6. Step 6: Final answer
   x = 7,745.40