Finding the Fourth Proportional to 14,651.41, 21,980.20 and 4,789.91

Step by Step Solution

1. Step 1: Write the proportion equation
   14,651.41 : 21,980.20 = 4,789.91 : x
2. Step 2: Convert to fraction form
   14,651.41/21,980.20 = 4,789.91/x
3. Step 3: Cross multiply
   14,651.41x = 21,980.20 × 4,789.91
4. Step 4: Simplify right side
   14,651.41x = 105,283,155.83
5. Step 5: Solve for x
   x = 105,283,155.83/14,651.41
6. Step 6: Final answer
   x = 7,185.87