Finding the Fourth Proportional to 21,971.50, 32,892.63 and 13,624.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,971.50 : 32,892.63 = 13,624.72 : x
2. Step 2: Convert to fraction form
   21,971.50/32,892.63 = 13,624.72/x
3. Step 3: Cross multiply
   21,971.50x = 32,892.63 × 13,624.72
4. Step 4: Simplify right side
   21,971.50x = 448,152,873.81
5. Step 5: Solve for x
   x = 448,152,873.81/21,971.50
6. Step 6: Final answer
   x = 20,397.01