Finding the Fourth Proportional to 9,050.55, 13,579.67 and 3,786.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,050.55 : 13,579.67 = 3,786.78 : x
2. Step 2: Convert to fraction form
   9,050.55/13,579.67 = 3,786.78/x
3. Step 3: Cross multiply
   9,050.55x = 13,579.67 × 3,786.78
4. Step 4: Simplify right side
   9,050.55x = 51,423,222.76
5. Step 5: Solve for x
   x = 51,423,222.76/9,050.55
6. Step 6: Final answer
   x = 5,681.78