Finding the Fourth Proportional to 21,570.50, 32,367.37 and 9,099.17

Step by Step Solution

1. Step 1: Write the proportion equation
   21,570.50 : 32,367.37 = 9,099.17 : x
2. Step 2: Convert to fraction form
   21,570.50/32,367.37 = 9,099.17/x
3. Step 3: Cross multiply
   21,570.50x = 32,367.37 × 9,099.17
4. Step 4: Simplify right side
   21,570.50x = 294,516,040.25
5. Step 5: Solve for x
   x = 294,516,040.25/21,570.50
6. Step 6: Final answer
   x = 13,653.65