Finding the Fourth Proportional to 10,091.48, 13,926.31 and 5,615.42

Step by Step Solution

1. Step 1: Write the proportion equation
   10,091.48 : 13,926.31 = 5,615.42 : x
2. Step 2: Convert to fraction form
   10,091.48/13,926.31 = 5,615.42/x
3. Step 3: Cross multiply
   10,091.48x = 13,926.31 × 5,615.42
4. Step 4: Simplify right side
   10,091.48x = 78,202,079.70
5. Step 5: Solve for x
   x = 78,202,079.70/10,091.48
6. Step 6: Final answer
   x = 7,749.32