Finding the Fourth Proportional to 11,978.32, 17,967.96 and 5,820.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,978.32 : 17,967.96 = 5,820.88 : x
2. Step 2: Convert to fraction form
   11,978.32/17,967.96 = 5,820.88/x
3. Step 3: Cross multiply
   11,978.32x = 17,967.96 × 5,820.88
4. Step 4: Simplify right side
   11,978.32x = 104,589,339.00
5. Step 5: Solve for x
   x = 104,589,339.00/11,978.32
6. Step 6: Final answer
   x = 8,731.55