Finding the Fourth Proportional to 19,916.37, 29,874.50 and 5,124.05

Step by Step Solution

1. Step 1: Write the proportion equation
   19,916.37 : 29,874.50 = 5,124.05 : x
2. Step 2: Convert to fraction form
   19,916.37/29,874.50 = 5,124.05/x
3. Step 3: Cross multiply
   19,916.37x = 29,874.50 × 5,124.05
4. Step 4: Simplify right side
   19,916.37x = 153,078,431.73
5. Step 5: Solve for x
   x = 153,078,431.73/19,916.37
6. Step 6: Final answer
   x = 7,686.06