Finding the Fourth Proportional to 9,539.42, 13,164.15 and 5,290.41

Step by Step Solution

1. Step 1: Write the proportion equation
   9,539.42 : 13,164.15 = 5,290.41 : x
2. Step 2: Convert to fraction form
   9,539.42/13,164.15 = 5,290.41/x
3. Step 3: Cross multiply
   9,539.42x = 13,164.15 × 5,290.41
4. Step 4: Simplify right side
   9,539.42x = 69,643,820.01
5. Step 5: Solve for x
   x = 69,643,820.01/9,539.42
6. Step 6: Final answer
   x = 7,300.64