Finding the Fourth Proportional to 16,868.58, 25,302.90 and 5,181.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,868.58 : 25,302.90 = 5,181.72 : x
2. Step 2: Convert to fraction form
   16,868.58/25,302.90 = 5,181.72/x
3. Step 3: Cross multiply
   16,868.58x = 25,302.90 × 5,181.72
4. Step 4: Simplify right side
   16,868.58x = 131,112,542.99
5. Step 5: Solve for x
   x = 131,112,542.99/16,868.58
6. Step 6: Final answer
   x = 7,772.59