Finding the Fourth Proportional to 5,156.72, 7,736.46 and 3,677.80

Step by Step Solution

1. Step 1: Write the proportion equation
   5,156.72 : 7,736.46 = 3,677.80 : x
2. Step 2: Convert to fraction form
   5,156.72/7,736.46 = 3,677.80/x
3. Step 3: Cross multiply
   5,156.72x = 7,736.46 × 3,677.80
4. Step 4: Simplify right side
   5,156.72x = 28,453,152.59
5. Step 5: Solve for x
   x = 28,453,152.59/5,156.72
6. Step 6: Final answer
   x = 5,517.68