Finding the Fourth Proportional to 11,353.37, 15,659.27 and 7,817.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,353.37 : 15,659.27 = 7,817.72 : x
2. Step 2: Convert to fraction form
   11,353.37/15,659.27 = 7,817.72/x
3. Step 3: Cross multiply
   11,353.37x = 15,659.27 × 7,817.72
4. Step 4: Simplify right side
   11,353.37x = 122,419,788.26
5. Step 5: Solve for x
   x = 122,419,788.26/11,353.37
6. Step 6: Final answer
   x = 10,782.68