Finding the Fourth Proportional to 21,061.85, 31,582.21 and 7,016.94

Step by Step Solution

1. Step 1: Write the proportion equation
   21,061.85 : 31,582.21 = 7,016.94 : x
2. Step 2: Convert to fraction form
   21,061.85/31,582.21 = 7,016.94/x
3. Step 3: Cross multiply
   21,061.85x = 31,582.21 × 7,016.94
4. Step 4: Simplify right side
   21,061.85x = 221,610,279.64
5. Step 5: Solve for x
   x = 221,610,279.64/21,061.85
6. Step 6: Final answer
   x = 10,521.88