Finding the Fourth Proportional to 9,128.76, 13,688.58 and 4,744.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,128.76 : 13,688.58 = 4,744.92 : x
2. Step 2: Convert to fraction form
   9,128.76/13,688.58 = 4,744.92/x
3. Step 3: Cross multiply
   9,128.76x = 13,688.58 × 4,744.92
4. Step 4: Simplify right side
   9,128.76x = 64,951,217.01
5. Step 5: Solve for x
   x = 64,951,217.01/9,128.76
6. Step 6: Final answer
   x = 7,115.01