Finding the Fourth Proportional to 13,904.58, 20,856.70 and 3,374.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,904.58 : 20,856.70 = 3,374.69 : x
2. Step 2: Convert to fraction form
   13,904.58/20,856.70 = 3,374.69/x
3. Step 3: Cross multiply
   13,904.58x = 20,856.70 × 3,374.69
4. Step 4: Simplify right side
   13,904.58x = 70,384,827.91
5. Step 5: Solve for x
   x = 70,384,827.91/13,904.58
6. Step 6: Final answer
   x = 5,061.99