Finding the Fourth Proportional to 12,385.72, 17,094.27 and 9,557.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,385.72 : 17,094.27 = 9,557.20 : x
2. Step 2: Convert to fraction form
   12,385.72/17,094.27 = 9,557.20/x
3. Step 3: Cross multiply
   12,385.72x = 17,094.27 × 9,557.20
4. Step 4: Simplify right side
   12,385.72x = 163,373,357.24
5. Step 5: Solve for x
   x = 163,373,357.24/12,385.72
6. Step 6: Final answer
   x = 13,190.46