Finding the Fourth Proportional to 16,786.81, 25,181.63 and 5,100.13

Step by Step Solution

1. Step 1: Write the proportion equation
   16,786.81 : 25,181.63 = 5,100.13 : x
2. Step 2: Convert to fraction form
   16,786.81/25,181.63 = 5,100.13/x
3. Step 3: Cross multiply
   16,786.81x = 25,181.63 × 5,100.13
4. Step 4: Simplify right side
   16,786.81x = 128,429,586.61
5. Step 5: Solve for x
   x = 128,429,586.61/16,786.81
6. Step 6: Final answer
   x = 7,650.62