Finding the Fourth Proportional to 10,509.04, 15,761.37 and 3,111.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,509.04 : 15,761.37 = 3,111.76 : x
2. Step 2: Convert to fraction form
   10,509.04/15,761.37 = 3,111.76/x
3. Step 3: Cross multiply
   10,509.04x = 15,761.37 × 3,111.76
4. Step 4: Simplify right side
   10,509.04x = 49,045,600.71
5. Step 5: Solve for x
   x = 49,045,600.71/10,509.04
6. Step 6: Final answer
   x = 4,666.99