Finding the Fourth Proportional to 21,955.72, 32,938.83 and 7,164.67

Step by Step Solution

1. Step 1: Write the proportion equation
   21,955.72 : 32,938.83 = 7,164.67 : x
2. Step 2: Convert to fraction form
   21,955.72/32,938.83 = 7,164.67/x
3. Step 3: Cross multiply
   21,955.72x = 32,938.83 × 7,164.67
4. Step 4: Simplify right side
   21,955.72x = 235,995,847.14
5. Step 5: Solve for x
   x = 235,995,847.14/21,955.72
6. Step 6: Final answer
   x = 10,748.72