Finding the Fourth Proportional to 3,784.59, 5,223.91 and 3,385.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,784.59 : 5,223.91 = 3,385.53 : x
2. Step 2: Convert to fraction form
   3,784.59/5,223.91 = 3,385.53/x
3. Step 3: Cross multiply
   3,784.59x = 5,223.91 × 3,385.53
4. Step 4: Simplify right side
   3,784.59x = 17,685,704.02
5. Step 5: Solve for x
   x = 17,685,704.02/3,784.59
6. Step 6: Final answer
   x = 4,673.08