Finding the Fourth Proportional to 10,918.31, 16,365.78 and 5,648.01

Step by Step Solution

1. Step 1: Write the proportion equation
   10,918.31 : 16,365.78 = 5,648.01 : x
2. Step 2: Convert to fraction form
   10,918.31/16,365.78 = 5,648.01/x
3. Step 3: Cross multiply
   10,918.31x = 16,365.78 × 5,648.01
4. Step 4: Simplify right side
   10,918.31x = 92,434,089.10
5. Step 5: Solve for x
   x = 92,434,089.10/10,918.31
6. Step 6: Final answer
   x = 8,465.97