Finding the Fourth Proportional to 21,112.54, 31,656.22 and 7,069.16

Step by Step Solution

1. Step 1: Write the proportion equation
   21,112.54 : 31,656.22 = 7,069.16 : x
2. Step 2: Convert to fraction form
   21,112.54/31,656.22 = 7,069.16/x
3. Step 3: Cross multiply
   21,112.54x = 31,656.22 × 7,069.16
4. Step 4: Simplify right side
   21,112.54x = 223,782,884.18
5. Step 5: Solve for x
   x = 223,782,884.18/21,112.54
6. Step 6: Final answer
   x = 10,599.52