Finding the Fourth Proportional to 11,886.48, 16,404.48 and 7,170.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,886.48 : 16,404.48 = 7,170.72 : x
2. Step 2: Convert to fraction form
   11,886.48/16,404.48 = 7,170.72/x
3. Step 3: Cross multiply
   11,886.48x = 16,404.48 × 7,170.72
4. Step 4: Simplify right side
   11,886.48x = 117,631,932.83
5. Step 5: Solve for x
   x = 117,631,932.83/11,886.48
6. Step 6: Final answer
   x = 9,896.28