Finding the Fourth Proportional to 12,843.32, 17,726.74 and 7,539.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,843.32 : 17,726.74 = 7,539.84 : x
2. Step 2: Convert to fraction form
   12,843.32/17,726.74 = 7,539.84/x
3. Step 3: Cross multiply
   12,843.32x = 17,726.74 × 7,539.84
4. Step 4: Simplify right side
   12,843.32x = 133,656,783.32
5. Step 5: Solve for x
   x = 133,656,783.32/12,843.32
6. Step 6: Final answer
   x = 10,406.72