Finding the Fourth Proportional to 9,167.58, 12,647.76 and 5,390.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,167.58 : 12,647.76 = 5,390.88 : x
2. Step 2: Convert to fraction form
   9,167.58/12,647.76 = 5,390.88/x
3. Step 3: Cross multiply
   9,167.58x = 12,647.76 × 5,390.88
4. Step 4: Simplify right side
   9,167.58x = 68,182,556.43
5. Step 5: Solve for x
   x = 68,182,556.43/9,167.58
6. Step 6: Final answer
   x = 7,437.36