Finding the Fourth Proportional to 12,947.40, 17,864.32 and 9,404.44

Step by Step Solution

1. Step 1: Write the proportion equation
   12,947.40 : 17,864.32 = 9,404.44 : x
2. Step 2: Convert to fraction form
   12,947.40/17,864.32 = 9,404.44/x
3. Step 3: Cross multiply
   12,947.40x = 17,864.32 × 9,404.44
4. Step 4: Simplify right side
   12,947.40x = 168,003,925.58
5. Step 5: Solve for x
   x = 168,003,925.58/12,947.40
6. Step 6: Final answer
   x = 12,975.88