Finding the Fourth Proportional to 6,900.40, 9,522.72 and 3,756.80

Step by Step Solution

1. Step 1: Write the proportion equation
   6,900.40 : 9,522.72 = 3,756.80 : x
2. Step 2: Convert to fraction form
   6,900.40/9,522.72 = 3,756.80/x
3. Step 3: Cross multiply
   6,900.40x = 9,522.72 × 3,756.80
4. Step 4: Simplify right side
   6,900.40x = 35,774,954.50
5. Step 5: Solve for x
   x = 35,774,954.50/6,900.40
6. Step 6: Final answer
   x = 5,184.48