Finding the Fourth Proportional to 17,631.30, 26,448.15 and 5,151.30

Step by Step Solution

1. Step 1: Write the proportion equation
   17,631.30 : 26,448.15 = 5,151.30 : x
2. Step 2: Convert to fraction form
   17,631.30/26,448.15 = 5,151.30/x
3. Step 3: Cross multiply
   17,631.30x = 26,448.15 × 5,151.30
4. Step 4: Simplify right side
   17,631.30x = 136,242,355.10
5. Step 5: Solve for x
   x = 136,242,355.10/17,631.30
6. Step 6: Final answer
   x = 7,727.30