Finding the Fourth Proportional to 10,091.74, 13,926.18 and 5,615.68

Step by Step Solution

1. Step 1: Write the proportion equation
   10,091.74 : 13,926.18 = 5,615.68 : x
2. Step 2: Convert to fraction form
   10,091.74/13,926.18 = 5,615.68/x
3. Step 3: Cross multiply
   10,091.74x = 13,926.18 × 5,615.68
4. Step 4: Simplify right side
   10,091.74x = 78,204,970.50
5. Step 5: Solve for x
   x = 78,204,970.50/10,091.74
6. Step 6: Final answer
   x = 7,749.40