Finding the Fourth Proportional to 5,428.48, 7,487.76 and 3,436.96

Step by Step Solution

1. Step 1: Write the proportion equation
   5,428.48 : 7,487.76 = 3,436.96 : x
2. Step 2: Convert to fraction form
   5,428.48/7,487.76 = 3,436.96/x
3. Step 3: Cross multiply
   5,428.48x = 7,487.76 × 3,436.96
4. Step 4: Simplify right side
   5,428.48x = 25,735,131.61
5. Step 5: Solve for x
   x = 25,735,131.61/5,428.48
6. Step 6: Final answer
   x = 4,740.76