Finding the Fourth Proportional to 12,429.34, 17,158.84 and 9,590.33

Step by Step Solution

1. Step 1: Write the proportion equation
   12,429.34 : 17,158.84 = 9,590.33 : x
2. Step 2: Convert to fraction form
   12,429.34/17,158.84 = 9,590.33/x
3. Step 3: Cross multiply
   12,429.34x = 17,158.84 × 9,590.33
4. Step 4: Simplify right side
   12,429.34x = 164,558,938.02
5. Step 5: Solve for x
   x = 164,558,938.02/12,429.34
6. Step 6: Final answer
   x = 13,239.56