Finding the Fourth Proportional to 12,678.34, 17,475.15 and 9,529.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,678.34 : 17,475.15 = 9,529.06 : x
2. Step 2: Convert to fraction form
   12,678.34/17,475.15 = 9,529.06/x
3. Step 3: Cross multiply
   12,678.34x = 17,475.15 × 9,529.06
4. Step 4: Simplify right side
   12,678.34x = 166,521,752.86
5. Step 5: Solve for x
   x = 166,521,752.86/12,678.34
6. Step 6: Final answer
   x = 13,134.35