Finding the Fourth Proportional to 10,090.79, 15,115.34 and 5,918.24

Step by Step Solution

1. Step 1: Write the proportion equation
   10,090.79 : 15,115.34 = 5,918.24 : x
2. Step 2: Convert to fraction form
   10,090.79/15,115.34 = 5,918.24/x
3. Step 3: Cross multiply
   10,090.79x = 15,115.34 × 5,918.24
4. Step 4: Simplify right side
   10,090.79x = 89,456,149.02
5. Step 5: Solve for x
   x = 89,456,149.02/10,090.79
6. Step 6: Final answer
   x = 8,865.13