Finding the Fourth Proportional to 12,620.72, 18,931.05 and 5,955.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,620.72 : 18,931.05 = 5,955.01 : x
2. Step 2: Convert to fraction form
   12,620.72/18,931.05 = 5,955.01/x
3. Step 3: Cross multiply
   12,620.72x = 18,931.05 × 5,955.01
4. Step 4: Simplify right side
   12,620.72x = 112,734,544.73
5. Step 5: Solve for x
   x = 112,734,544.73/12,620.72
6. Step 6: Final answer
   x = 8,932.50