Finding the Fourth Proportional to 10,135.69, 13,985.58 and 5,658.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,135.69 : 13,985.58 = 5,658.72 : x
2. Step 2: Convert to fraction form
   10,135.69/13,985.58 = 5,658.72/x
3. Step 3: Cross multiply
   10,135.69x = 13,985.58 × 5,658.72
4. Step 4: Simplify right side
   10,135.69x = 79,140,481.26
5. Step 5: Solve for x
   x = 79,140,481.26/10,135.69
6. Step 6: Final answer
   x = 7,808.10