Finding the Fourth Proportional to 10,395.21, 14,345.35 and 5,679.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,395.21 : 14,345.35 = 5,679.49 : x
2. Step 2: Convert to fraction form
   10,395.21/14,345.35 = 5,679.49/x
3. Step 3: Cross multiply
   10,395.21x = 14,345.35 × 5,679.49
4. Step 4: Simplify right side
   10,395.21x = 81,474,271.87
5. Step 5: Solve for x
   x = 81,474,271.87/10,395.21
6. Step 6: Final answer
   x = 7,837.67