Finding the Fourth Proportional to 12,994.30, 19,478.17 and 4,558.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,994.30 : 19,478.17 = 4,558.28 : x
2. Step 2: Convert to fraction form
   12,994.30/19,478.17 = 4,558.28/x
3. Step 3: Cross multiply
   12,994.30x = 19,478.17 × 4,558.28
4. Step 4: Simplify right side
   12,994.30x = 88,786,952.75
5. Step 5: Solve for x
   x = 88,786,952.75/12,994.30
6. Step 6: Final answer
   x = 6,832.76