Finding the Fourth Proportional to 12,429.77, 17,153.49 and 7,125.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,429.77 : 17,153.49 = 7,125.59 : x
2. Step 2: Convert to fraction form
   12,429.77/17,153.49 = 7,125.59/x
3. Step 3: Cross multiply
   12,429.77x = 17,153.49 × 7,125.59
4. Step 4: Simplify right side
   12,429.77x = 122,228,736.81
5. Step 5: Solve for x
   x = 122,228,736.81/12,429.77
6. Step 6: Final answer
   x = 9,833.55