Finding the Fourth Proportional to 12,947.57, 19,426.82 and 5,555.51

Step by Step Solution

1. Step 1: Write the proportion equation
   12,947.57 : 19,426.82 = 5,555.51 : x
2. Step 2: Convert to fraction form
   12,947.57/19,426.82 = 5,555.51/x
3. Step 3: Cross multiply
   12,947.57x = 19,426.82 × 5,555.51
4. Step 4: Simplify right side
   12,947.57x = 107,925,892.78
5. Step 5: Solve for x
   x = 107,925,892.78/12,947.57
6. Step 6: Final answer
   x = 8,335.61