Finding the Fourth Proportional to 9,162.60, 13,762.31 and 8,904.21

Step by Step Solution

1. Step 1: Write the proportion equation
   9,162.60 : 13,762.31 = 8,904.21 : x
2. Step 2: Convert to fraction form
   9,162.60/13,762.31 = 8,904.21/x
3. Step 3: Cross multiply
   9,162.60x = 13,762.31 × 8,904.21
4. Step 4: Simplify right side
   9,162.60x = 122,542,498.33
5. Step 5: Solve for x
   x = 122,542,498.33/9,162.60
6. Step 6: Final answer
   x = 13,374.21