Finding the Fourth Proportional to 4,784.18, 7,147.96 and 4,620.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,784.18 : 7,147.96 = 4,620.72 : x
2. Step 2: Convert to fraction form
   4,784.18/7,147.96 = 4,620.72/x
3. Step 3: Cross multiply
   4,784.18x = 7,147.96 × 4,620.72
4. Step 4: Simplify right side
   4,784.18x = 33,028,723.38
5. Step 5: Solve for x
   x = 33,028,723.38/4,784.18
6. Step 6: Final answer
   x = 6,903.74