Finding the Fourth Proportional to 10,764.72, 16,142.80 and 4,189.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,764.72 : 16,142.80 = 4,189.96 : x
2. Step 2: Convert to fraction form
   10,764.72/16,142.80 = 4,189.96/x
3. Step 3: Cross multiply
   10,764.72x = 16,142.80 × 4,189.96
4. Step 4: Simplify right side
   10,764.72x = 67,637,686.29
5. Step 5: Solve for x
   x = 67,637,686.29/10,764.72
6. Step 6: Final answer
   x = 6,283.27