Finding the Fourth Proportional to 3,888.91, 5,834.27 and 3,307.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,888.91 : 5,834.27 = 3,307.89 : x
2. Step 2: Convert to fraction form
   3,888.91/5,834.27 = 3,307.89/x
3. Step 3: Cross multiply
   3,888.91x = 5,834.27 × 3,307.89
4. Step 4: Simplify right side
   3,888.91x = 19,299,131.66
5. Step 5: Solve for x
   x = 19,299,131.66/3,888.91
6. Step 6: Final answer
   x = 4,962.61