Finding the Fourth Proportional to 10,427.21, 14,389.48 and 5,647.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,427.21 : 14,389.48 = 5,647.10 : x
2. Step 2: Convert to fraction form
   10,427.21/14,389.48 = 5,647.10/x
3. Step 3: Cross multiply
   10,427.21x = 14,389.48 × 5,647.10
4. Step 4: Simplify right side
   10,427.21x = 81,258,832.51
5. Step 5: Solve for x
   x = 81,258,832.51/10,427.21
6. Step 6: Final answer
   x = 7,792.96