Finding the Fourth Proportional to 17,916.21, 26,874.38 and 5,436.34

Step by Step Solution

1. Step 1: Write the proportion equation
   17,916.21 : 26,874.38 = 5,436.34 : x
2. Step 2: Convert to fraction form
   17,916.21/26,874.38 = 5,436.34/x
3. Step 3: Cross multiply
   17,916.21x = 26,874.38 × 5,436.34
4. Step 4: Simplify right side
   17,916.21x = 146,098,213.37
5. Step 5: Solve for x
   x = 146,098,213.37/17,916.21
6. Step 6: Final answer
   x = 8,154.53