Finding the Fourth Proportional to 12,951.08, 19,428.78 and 4,184.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,951.08 : 19,428.78 = 4,184.96 : x
2. Step 2: Convert to fraction form
   12,951.08/19,428.78 = 4,184.96/x
3. Step 3: Cross multiply
   12,951.08x = 19,428.78 × 4,184.96
4. Step 4: Simplify right side
   12,951.08x = 81,308,667.15
5. Step 5: Solve for x
   x = 81,308,667.15/12,951.08
6. Step 6: Final answer
   x = 6,278.14