Finding the Fourth Proportional to 10,505.63, 15,758.42 and 3,109.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,505.63 : 15,758.42 = 3,109.50 : x
2. Step 2: Convert to fraction form
   10,505.63/15,758.42 = 3,109.50/x
3. Step 3: Cross multiply
   10,505.63x = 15,758.42 × 3,109.50
4. Step 4: Simplify right side
   10,505.63x = 49,000,806.99
5. Step 5: Solve for x
   x = 49,000,806.99/10,505.63
6. Step 6: Final answer
   x = 4,664.24