Finding the Fourth Proportional to 12,961.71, 19,446.35 and 4,196.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,961.71 : 19,446.35 = 4,196.43 : x
2. Step 2: Convert to fraction form
   12,961.71/19,446.35 = 4,196.43/x
3. Step 3: Cross multiply
   12,961.71x = 19,446.35 × 4,196.43
4. Step 4: Simplify right side
   12,961.71x = 81,605,225.55
5. Step 5: Solve for x
   x = 81,605,225.55/12,961.71
6. Step 6: Final answer
   x = 6,295.87