Finding the Fourth Proportional to 4,779.76, 7,111.82 and 4,660.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,779.76 : 7,111.82 = 4,660.72 : x
2. Step 2: Convert to fraction form
   4,779.76/7,111.82 = 4,660.72/x
3. Step 3: Cross multiply
   4,779.76x = 7,111.82 × 4,660.72
4. Step 4: Simplify right side
   4,779.76x = 33,146,201.71
5. Step 5: Solve for x
   x = 33,146,201.71/4,779.76
6. Step 6: Final answer
   x = 6,934.70