Finding the Fourth Proportional to 14,068.05, 21,091.59 and 8,520.18

Step by Step Solution

1. Step 1: Write the proportion equation
   14,068.05 : 21,091.59 = 8,520.18 : x
2. Step 2: Convert to fraction form
   14,068.05/21,091.59 = 8,520.18/x
3. Step 3: Cross multiply
   14,068.05x = 21,091.59 × 8,520.18
4. Step 4: Simplify right side
   14,068.05x = 179,704,143.29
5. Step 5: Solve for x
   x = 179,704,143.29/14,068.05
6. Step 6: Final answer
   x = 12,773.92