Finding the Fourth Proportional to 21,114.54, 31,659.22 and 7,071.16

Step by Step Solution

1. Step 1: Write the proportion equation
   21,114.54 : 31,659.22 = 7,071.16 : x
2. Step 2: Convert to fraction form
   21,114.54/31,659.22 = 7,071.16/x
3. Step 3: Cross multiply
   21,114.54x = 31,659.22 × 7,071.16
4. Step 4: Simplify right side
   21,114.54x = 223,867,410.10
5. Step 5: Solve for x
   x = 223,867,410.10/21,114.54
6. Step 6: Final answer
   x = 10,602.52