Finding the Fourth Proportional to 14,160.12, 19,532.89 and 8,780.10

Step by Step Solution

1. Step 1: Write the proportion equation
   14,160.12 : 19,532.89 = 8,780.10 : x
2. Step 2: Convert to fraction form
   14,160.12/19,532.89 = 8,780.10/x
3. Step 3: Cross multiply
   14,160.12x = 19,532.89 × 8,780.10
4. Step 4: Simplify right side
   14,160.12x = 171,500,727.49
5. Step 5: Solve for x
   x = 171,500,727.49/14,160.12
6. Step 6: Final answer
   x = 12,111.53