Finding the Fourth Proportional to 8,914.53, 12,304.09 and 5,139.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,914.53 : 12,304.09 = 5,139.89 : x
2. Step 2: Convert to fraction form
   8,914.53/12,304.09 = 5,139.89/x
3. Step 3: Cross multiply
   8,914.53x = 12,304.09 × 5,139.89
4. Step 4: Simplify right side
   8,914.53x = 63,241,669.15
5. Step 5: Solve for x
   x = 63,241,669.15/8,914.53
6. Step 6: Final answer
   x = 7,094.22