Finding the Fourth Proportional to 5,089.60, 7,627.72 and 3,688.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,089.60 : 7,627.72 = 3,688.72 : x
2. Step 2: Convert to fraction form
   5,089.60/7,627.72 = 3,688.72/x
3. Step 3: Cross multiply
   5,089.60x = 7,627.72 × 3,688.72
4. Step 4: Simplify right side
   5,089.60x = 28,136,523.32
5. Step 5: Solve for x
   x = 28,136,523.32/5,089.60
6. Step 6: Final answer
   x = 5,528.24