Finding the Fourth Proportional to 12,979, 19,468.86 and 3,745

Step by Step Solution

1. Step 1: Write the proportion equation
   12,979 : 19,468.86 = 3,745 : x
2. Step 2: Convert to fraction form
   12,979/19,468.86 = 3,745/x
3. Step 3: Cross multiply
   12,979x = 19,468.86 × 3,745
4. Step 4: Simplify right side
   12,979x = 72,910,880.70
5. Step 5: Solve for x
   x = 72,910,880.70/12,979
6. Step 6: Final answer
   x = 5,617.60