Finding the Fourth Proportional to 46,144.76, 69,215.04 and 12,864.15

Step by Step Solution

1. Step 1: Write the proportion equation
   46,144.76 : 69,215.04 = 12,864.15 : x
2. Step 2: Convert to fraction form
   46,144.76/69,215.04 = 12,864.15/x
3. Step 3: Cross multiply
   46,144.76x = 69,215.04 × 12,864.15
4. Step 4: Simplify right side
   46,144.76x = 890,392,656.82
5. Step 5: Solve for x
   x = 890,392,656.82/46,144.76
6. Step 6: Final answer
   x = 19,295.64