Finding the Fourth Proportional to 9,539.87, 13,164.56 and 5,291.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,539.87 : 13,164.56 = 5,291.10 : x
2. Step 2: Convert to fraction form
   9,539.87/13,164.56 = 5,291.10/x
3. Step 3: Cross multiply
   9,539.87x = 13,164.56 × 5,291.10
4. Step 4: Simplify right side
   9,539.87x = 69,654,996.80
5. Step 5: Solve for x
   x = 69,654,996.80/9,539.87
6. Step 6: Final answer
   x = 7,301.46