Finding the Fourth Proportional to 21,191.83, 29,178.05 and 17,998.27

Step by Step Solution

1. Step 1: Write the proportion equation
   21,191.83 : 29,178.05 = 17,998.27 : x
2. Step 2: Convert to fraction form
   21,191.83/29,178.05 = 17,998.27/x
3. Step 3: Cross multiply
   21,191.83x = 29,178.05 × 17,998.27
4. Step 4: Simplify right side
   21,191.83x = 525,154,331.98
5. Step 5: Solve for x
   x = 525,154,331.98/21,191.83
6. Step 6: Final answer
   x = 24,780.98