Finding the Fourth Proportional to 12,947.83, 19,419.64 and 4,626.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,947.83 : 19,419.64 = 4,626.43 : x
2. Step 2: Convert to fraction form
   12,947.83/19,419.64 = 4,626.43/x
3. Step 3: Cross multiply
   12,947.83x = 19,419.64 × 4,626.43
4. Step 4: Simplify right side
   12,947.83x = 89,843,605.09
5. Step 5: Solve for x
   x = 89,843,605.09/12,947.83
6. Step 6: Final answer
   x = 6,938.89