Finding the Fourth Proportional to 14,068.05, 21,091.62 and 8,520.09

Step by Step Solution

1. Step 1: Write the proportion equation
   14,068.05 : 21,091.62 = 8,520.09 : x
2. Step 2: Convert to fraction form
   14,068.05/21,091.62 = 8,520.09/x
3. Step 3: Cross multiply
   14,068.05x = 21,091.62 × 8,520.09
4. Step 4: Simplify right side
   14,068.05x = 179,702,500.65
5. Step 5: Solve for x
   x = 179,702,500.65/14,068.05
6. Step 6: Final answer
   x = 12,773.80