Finding the Fourth Proportional to 11,909.55, 16,436.53 and 6,875.12

Step by Step Solution

1. Step 1: Write the proportion equation
   11,909.55 : 16,436.53 = 6,875.12 : x
2. Step 2: Convert to fraction form
   11,909.55/16,436.53 = 6,875.12/x
3. Step 3: Cross multiply
   11,909.55x = 16,436.53 × 6,875.12
4. Step 4: Simplify right side
   11,909.55x = 113,003,081.76
5. Step 5: Solve for x
   x = 113,003,081.76/11,909.55
6. Step 6: Final answer
   x = 9,488.45