Finding the Fourth Proportional to 10,103.76, 15,162.72 and 5,656.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,103.76 : 15,162.72 = 5,656.80 : x
2. Step 2: Convert to fraction form
   10,103.76/15,162.72 = 5,656.80/x
3. Step 3: Cross multiply
   10,103.76x = 15,162.72 × 5,656.80
4. Step 4: Simplify right side
   10,103.76x = 85,772,474.50
5. Step 5: Solve for x
   x = 85,772,474.50/10,103.76
6. Step 6: Final answer
   x = 8,489.16