Finding the Fourth Proportional to 11,987.32, 16,543.56 and 7,274.20

Step by Step Solution

1. Step 1: Write the proportion equation
   11,987.32 : 16,543.56 = 7,274.20 : x
2. Step 2: Convert to fraction form
   11,987.32/16,543.56 = 7,274.20/x
3. Step 3: Cross multiply
   11,987.32x = 16,543.56 × 7,274.20
4. Step 4: Simplify right side
   11,987.32x = 120,341,164.15
5. Step 5: Solve for x
   x = 120,341,164.15/11,987.32
6. Step 6: Final answer
   x = 10,039.04