Finding the Fourth Proportional to 10,455.73, 14,428.25 and 5,739.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,455.73 : 14,428.25 = 5,739.98 : x
2. Step 2: Convert to fraction form
   10,455.73/14,428.25 = 5,739.98/x
3. Step 3: Cross multiply
   10,455.73x = 14,428.25 × 5,739.98
4. Step 4: Simplify right side
   10,455.73x = 82,817,837.74
5. Step 5: Solve for x
   x = 82,817,837.74/10,455.73
6. Step 6: Final answer
   x = 7,920.81