Finding the Fourth Proportional to 10,274.91, 15,412.15 and 3,705.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,274.91 : 15,412.15 = 3,705.40 : x
2. Step 2: Convert to fraction form
   10,274.91/15,412.15 = 3,705.40/x
3. Step 3: Cross multiply
   10,274.91x = 15,412.15 × 3,705.40
4. Step 4: Simplify right side
   10,274.91x = 57,108,180.61
5. Step 5: Solve for x
   x = 57,108,180.61/10,274.91
6. Step 6: Final answer
   x = 5,558.02