Finding the Fourth Proportional to 12,477.12, 17,230.56 and 7,763.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,477.12 : 17,230.56 = 7,763.52 : x
2. Step 2: Convert to fraction form
   12,477.12/17,230.56 = 7,763.52/x
3. Step 3: Cross multiply
   12,477.12x = 17,230.56 × 7,763.52
4. Step 4: Simplify right side
   12,477.12x = 133,769,797.17
5. Step 5: Solve for x
   x = 133,769,797.17/12,477.12
6. Step 6: Final answer
   x = 10,721.21