Finding the Fourth Proportional to 11,818, 16,308.72 and 7,041.24

Step by Step Solution

1. Step 1: Write the proportion equation
   11,818 : 16,308.72 = 7,041.24 : x
2. Step 2: Convert to fraction form
   11,818/16,308.72 = 7,041.24/x
3. Step 3: Cross multiply
   11,818x = 16,308.72 × 7,041.24
4. Step 4: Simplify right side
   11,818x = 114,833,611.61
5. Step 5: Solve for x
   x = 114,833,611.61/11,818
6. Step 6: Final answer
   x = 9,716.84