Finding the Fourth Proportional to 9,805.86, 13,531.86 and 5,329.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,805.86 : 13,531.86 = 5,329.50 : x
2. Step 2: Convert to fraction form
   9,805.86/13,531.86 = 5,329.50/x
3. Step 3: Cross multiply
   9,805.86x = 13,531.86 × 5,329.50
4. Step 4: Simplify right side
   9,805.86x = 72,118,047.87
5. Step 5: Solve for x
   x = 72,118,047.87/9,805.86
6. Step 6: Final answer
   x = 7,354.59