Finding the Fourth Proportional to 21,499.71, 32,166.10 and 18,847.26

Step by Step Solution

1. Step 1: Write the proportion equation
   21,499.71 : 32,166.10 = 18,847.26 : x
2. Step 2: Convert to fraction form
   21,499.71/32,166.10 = 18,847.26/x
3. Step 3: Cross multiply
   21,499.71x = 32,166.10 × 18,847.26
4. Step 4: Simplify right side
   21,499.71x = 606,242,849.89
5. Step 5: Solve for x
   x = 606,242,849.89/21,499.71
6. Step 6: Final answer
   x = 28,197.72