Finding the Fourth Proportional to 11,675.76, 16,116.12 and 7,200.90

Step by Step Solution

1. Step 1: Write the proportion equation
   11,675.76 : 16,116.12 = 7,200.90 : x
2. Step 2: Convert to fraction form
   11,675.76/16,116.12 = 7,200.90/x
3. Step 3: Cross multiply
   11,675.76x = 16,116.12 × 7,200.90
4. Step 4: Simplify right side
   11,675.76x = 116,050,568.51
5. Step 5: Solve for x
   x = 116,050,568.51/11,675.76
6. Step 6: Final answer
   x = 9,939.44