Finding the Fourth Proportional to 21,911.17, 32,870.84 and 7,116.11

Step by Step Solution

1. Step 1: Write the proportion equation
   21,911.17 : 32,870.84 = 7,116.11 : x
2. Step 2: Convert to fraction form
   21,911.17/32,870.84 = 7,116.11/x
3. Step 3: Cross multiply
   21,911.17x = 32,870.84 × 7,116.11
4. Step 4: Simplify right side
   21,911.17x = 233,912,559.83
5. Step 5: Solve for x
   x = 233,912,559.83/21,911.17
6. Step 6: Final answer
   x = 10,675.50