Finding the Fourth Proportional to 4,870.11, 7,304.31 and 3,109.89

Step by Step Solution

1. Step 1: Write the proportion equation
   4,870.11 : 7,304.31 = 3,109.89 : x
2. Step 2: Convert to fraction form
   4,870.11/7,304.31 = 3,109.89/x
3. Step 3: Cross multiply
   4,870.11x = 7,304.31 × 3,109.89
4. Step 4: Simplify right side
   4,870.11x = 22,715,600.63
5. Step 5: Solve for x
   x = 22,715,600.63/4,870.11
6. Step 6: Final answer
   x = 4,664.29