Finding the Fourth Proportional to 9,855.30, 13,605.34 and 7,612.14

Step by Step Solution

1. Step 1: Write the proportion equation
   9,855.30 : 13,605.34 = 7,612.14 : x
2. Step 2: Convert to fraction form
   9,855.30/13,605.34 = 7,612.14/x
3. Step 3: Cross multiply
   9,855.30x = 13,605.34 × 7,612.14
4. Step 4: Simplify right side
   9,855.30x = 103,565,752.83
5. Step 5: Solve for x
   x = 103,565,752.83/9,855.30
6. Step 6: Final answer
   x = 10,508.64