Finding the Fourth Proportional to 4,994.12, 6,890.98 and 3,106.20

Step by Step Solution

1. Step 1: Write the proportion equation
   4,994.12 : 6,890.98 = 3,106.20 : x
2. Step 2: Convert to fraction form
   4,994.12/6,890.98 = 3,106.20/x
3. Step 3: Cross multiply
   4,994.12x = 6,890.98 × 3,106.20
4. Step 4: Simplify right side
   4,994.12x = 21,404,762.08
5. Step 5: Solve for x
   x = 21,404,762.08/4,994.12
6. Step 6: Final answer
   x = 4,285.99