Finding the Fourth Proportional to 10,620.82, 15,926.63 and 3,503.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,620.82 : 15,926.63 = 3,503.05 : x
2. Step 2: Convert to fraction form
   10,620.82/15,926.63 = 3,503.05/x
3. Step 3: Cross multiply
   10,620.82x = 15,926.63 × 3,503.05
4. Step 4: Simplify right side
   10,620.82x = 55,791,723.89
5. Step 5: Solve for x
   x = 55,791,723.89/10,620.82
6. Step 6: Final answer
   x = 5,253.05