Finding the Fourth Proportional to 28,218.17, 42,334.23 and 19,914.41

Step by Step Solution

1. Step 1: Write the proportion equation
   28,218.17 : 42,334.23 = 19,914.41 : x
2. Step 2: Convert to fraction form
   28,218.17/42,334.23 = 19,914.41/x
3. Step 3: Cross multiply
   28,218.17x = 42,334.23 × 19,914.41
4. Step 4: Simplify right side
   28,218.17x = 843,061,213.25
5. Step 5: Solve for x
   x = 843,061,213.25/28,218.17
6. Step 6: Final answer
   x = 29,876.54