Finding the Fourth Proportional to 5,144.34, 7,098.72 and 2,905.80

Step by Step Solution

1. Step 1: Write the proportion equation
   5,144.34 : 7,098.72 = 2,905.80 : x
2. Step 2: Convert to fraction form
   5,144.34/7,098.72 = 2,905.80/x
3. Step 3: Cross multiply
   5,144.34x = 7,098.72 × 2,905.80
4. Step 4: Simplify right side
   5,144.34x = 20,627,460.58
5. Step 5: Solve for x
   x = 20,627,460.58/5,144.34
6. Step 6: Final answer
   x = 4,009.74