Finding the Fourth Proportional to 11,707.81, 16,156.83 and 6,402.62

Step by Step Solution

1. Step 1: Write the proportion equation
   11,707.81 : 16,156.83 = 6,402.62 : x
2. Step 2: Convert to fraction form
   11,707.81/16,156.83 = 6,402.62/x
3. Step 3: Cross multiply
   11,707.81x = 16,156.83 × 6,402.62
4. Step 4: Simplify right side
   11,707.81x = 103,446,042.89
5. Step 5: Solve for x
   x = 103,446,042.89/11,707.81
6. Step 6: Final answer
   x = 8,835.64