Finding the Fourth Proportional to 11,802.78, 17,711.01 and 4,406.96

Step by Step Solution

1. Step 1: Write the proportion equation
   11,802.78 : 17,711.01 = 4,406.96 : x
2. Step 2: Convert to fraction form
   11,802.78/17,711.01 = 4,406.96/x
3. Step 3: Cross multiply
   11,802.78x = 17,711.01 × 4,406.96
4. Step 4: Simplify right side
   11,802.78x = 78,051,756.91
5. Step 5: Solve for x
   x = 78,051,756.91/11,802.78
6. Step 6: Final answer
   x = 6,613.00