Finding the Fourth Proportional to 16,890.32, 25,325.76 and 5,200.40

Step by Step Solution

1. Step 1: Write the proportion equation
   16,890.32 : 25,325.76 = 5,200.40 : x
2. Step 2: Convert to fraction form
   16,890.32/25,325.76 = 5,200.40/x
3. Step 3: Cross multiply
   16,890.32x = 25,325.76 × 5,200.40
4. Step 4: Simplify right side
   16,890.32x = 131,704,082.30
5. Step 5: Solve for x
   x = 131,704,082.30/16,890.32
6. Step 6: Final answer
   x = 7,797.61