Finding the Fourth Proportional to 16,817.31, 25,225.89 and 5,130.49

Step by Step Solution

1. Step 1: Write the proportion equation
   16,817.31 : 25,225.89 = 5,130.49 : x
2. Step 2: Convert to fraction form
   16,817.31/25,225.89 = 5,130.49/x
3. Step 3: Cross multiply
   16,817.31x = 25,225.89 × 5,130.49
4. Step 4: Simplify right side
   16,817.31x = 129,421,176.39
5. Step 5: Solve for x
   x = 129,421,176.39/16,817.31
6. Step 6: Final answer
   x = 7,695.71