Finding the Fourth Proportional to 10,274.48, 15,407.94 and 3,698.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,274.48 : 15,407.94 = 3,698.90 : x
2. Step 2: Convert to fraction form
   10,274.48/15,407.94 = 3,698.90/x
3. Step 3: Cross multiply
   10,274.48x = 15,407.94 × 3,698.90
4. Step 4: Simplify right side
   10,274.48x = 56,992,429.27
5. Step 5: Solve for x
   x = 56,992,429.27/10,274.48
6. Step 6: Final answer
   x = 5,546.99