Finding the Fourth Proportional to 11,799.37, 17,690.74 and 4,777.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,799.37 : 17,690.74 = 4,777.31 : x
2. Step 2: Convert to fraction form
   11,799.37/17,690.74 = 4,777.31/x
3. Step 3: Cross multiply
   11,799.37x = 17,690.74 × 4,777.31
4. Step 4: Simplify right side
   11,799.37x = 84,514,181.39
5. Step 5: Solve for x
   x = 84,514,181.39/11,799.37
6. Step 6: Final answer
   x = 7,162.60