Finding the Fourth Proportional to 6,900.72, 9,522.88 and 3,756.80

Step by Step Solution

1. Step 1: Write the proportion equation
   6,900.72 : 9,522.88 = 3,756.80 : x
2. Step 2: Convert to fraction form
   6,900.72/9,522.88 = 3,756.80/x
3. Step 3: Cross multiply
   6,900.72x = 9,522.88 × 3,756.80
4. Step 4: Simplify right side
   6,900.72x = 35,775,555.58
5. Step 5: Solve for x
   x = 35,775,555.58/6,900.72
6. Step 6: Final answer
   x = 5,184.32