Finding the Fourth Proportional to 3,917.21, 5,407.59 and 2,426.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,917.21 : 5,407.59 = 2,426.10 : x
2. Step 2: Convert to fraction form
   3,917.21/5,407.59 = 2,426.10/x
3. Step 3: Cross multiply
   3,917.21x = 5,407.59 × 2,426.10
4. Step 4: Simplify right side
   3,917.21x = 13,119,354.10
5. Step 5: Solve for x
   x = 13,119,354.10/3,917.21
6. Step 6: Final answer
   x = 3,349.16