Finding the Fourth Proportional to 10,091.76, 13,925.16 and 5,615.16

Step by Step Solution

1. Step 1: Write the proportion equation
   10,091.76 : 13,925.16 = 5,615.16 : x
2. Step 2: Convert to fraction form
   10,091.76/13,925.16 = 5,615.16/x
3. Step 3: Cross multiply
   10,091.76x = 13,925.16 × 5,615.16
4. Step 4: Simplify right side
   10,091.76x = 78,192,001.43
5. Step 5: Solve for x
   x = 78,192,001.43/10,091.76
6. Step 6: Final answer
   x = 7,748.10