Finding the Fourth Proportional to 14,057.19, 19,398.93 and 7,769.57

Step by Step Solution

1. Step 1: Write the proportion equation
   14,057.19 : 19,398.93 = 7,769.57 : x
2. Step 2: Convert to fraction form
   14,057.19/19,398.93 = 7,769.57/x
3. Step 3: Cross multiply
   14,057.19x = 19,398.93 × 7,769.57
4. Step 4: Simplify right side
   14,057.19x = 150,721,208.72
5. Step 5: Solve for x
   x = 150,721,208.72/14,057.19
6. Step 6: Final answer
   x = 10,722.00