Finding the Fourth Proportional to 14,189.43, 19,581.55 and 7,816.05

Step by Step Solution

1. Step 1: Write the proportion equation
   14,189.43 : 19,581.55 = 7,816.05 : x
2. Step 2: Convert to fraction form
   14,189.43/19,581.55 = 7,816.05/x
3. Step 3: Cross multiply
   14,189.43x = 19,581.55 × 7,816.05
4. Step 4: Simplify right side
   14,189.43x = 153,050,236.89
5. Step 5: Solve for x
   x = 153,050,236.89/14,189.43
6. Step 6: Final answer
   x = 10,786.21