Finding the Fourth Proportional to 9,985.34, 13,779.25 and 5,733.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,985.34 : 13,779.25 = 5,733.45 : x
2. Step 2: Convert to fraction form
   9,985.34/13,779.25 = 5,733.45/x
3. Step 3: Cross multiply
   9,985.34x = 13,779.25 × 5,733.45
4. Step 4: Simplify right side
   9,985.34x = 79,002,640.91
5. Step 5: Solve for x
   x = 79,002,640.91/9,985.34
6. Step 6: Final answer
   x = 7,911.86