Finding the Fourth Proportional to 12,947.82, 19,422.14 and 3,587.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,947.82 : 19,422.14 = 3,587.92 : x
2. Step 2: Convert to fraction form
   12,947.82/19,422.14 = 3,587.92/x
3. Step 3: Cross multiply
   12,947.82x = 19,422.14 × 3,587.92
4. Step 4: Simplify right side
   12,947.82x = 69,685,018.05
5. Step 5: Solve for x
   x = 69,685,018.05/12,947.82
6. Step 6: Final answer
   x = 5,381.99