Finding the Fourth Proportional to 10,620.59, 14,656.68 and 5,905.17

Step by Step Solution

1. Step 1: Write the proportion equation
   10,620.59 : 14,656.68 = 5,905.17 : x
2. Step 2: Convert to fraction form
   10,620.59/14,656.68 = 5,905.17/x
3. Step 3: Cross multiply
   10,620.59x = 14,656.68 × 5,905.17
4. Step 4: Simplify right side
   10,620.59x = 86,550,187.04
5. Step 5: Solve for x
   x = 86,550,187.04/10,620.59
6. Step 6: Final answer
   x = 8,149.29