Finding the Fourth Proportional to 14,580.83, 21,870.55 and 6,678.79

Step by Step Solution

1. Step 1: Write the proportion equation
   14,580.83 : 21,870.55 = 6,678.79 : x
2. Step 2: Convert to fraction form
   14,580.83/21,870.55 = 6,678.79/x
3. Step 3: Cross multiply
   14,580.83x = 21,870.55 × 6,678.79
4. Step 4: Simplify right side
   14,580.83x = 146,068,667.89
5. Step 5: Solve for x
   x = 146,068,667.89/14,580.83
6. Step 6: Final answer
   x = 10,017.86