Finding the Fourth Proportional to 11,699.79, 17,551.71 and 5,125.83

Step by Step Solution

1. Step 1: Write the proportion equation
   11,699.79 : 17,551.71 = 5,125.83 : x
2. Step 2: Convert to fraction form
   11,699.79/17,551.71 = 5,125.83/x
3. Step 3: Cross multiply
   11,699.79x = 17,551.71 × 5,125.83
4. Step 4: Simplify right side
   11,699.79x = 89,967,081.67
5. Step 5: Solve for x
   x = 89,967,081.67/11,699.79
6. Step 6: Final answer
   x = 7,689.63