Finding the Fourth Proportional to 12,326.91, 17,009.78 and 7,548.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,326.91 : 17,009.78 = 7,548.05 : x
2. Step 2: Convert to fraction form
   12,326.91/17,009.78 = 7,548.05/x
3. Step 3: Cross multiply
   12,326.91x = 17,009.78 × 7,548.05
4. Step 4: Simplify right side
   12,326.91x = 128,390,725.19
5. Step 5: Solve for x
   x = 128,390,725.19/12,326.91
6. Step 6: Final answer
   x = 10,415.49