Finding the Fourth Proportional to 4,948.86, 6,830.55 and 3,085.50

Step by Step Solution

1. Step 1: Write the proportion equation
   4,948.86 : 6,830.55 = 3,085.50 : x
2. Step 2: Convert to fraction form
   4,948.86/6,830.55 = 3,085.50/x
3. Step 3: Cross multiply
   4,948.86x = 6,830.55 × 3,085.50
4. Step 4: Simplify right side
   4,948.86x = 21,075,662.03
5. Step 5: Solve for x
   x = 21,075,662.03/4,948.86
6. Step 6: Final answer
   x = 4,258.69