Finding the Fourth Proportional to 8,978.58, 13,473.63 and 4,359.06

Step by Step Solution

1. Step 1: Write the proportion equation
   8,978.58 : 13,473.63 = 4,359.06 : x
2. Step 2: Convert to fraction form
   8,978.58/13,473.63 = 4,359.06/x
3. Step 3: Cross multiply
   8,978.58x = 13,473.63 × 4,359.06
4. Step 4: Simplify right side
   8,978.58x = 58,732,361.59
5. Step 5: Solve for x
   x = 58,732,361.59/8,978.58
6. Step 6: Final answer
   x = 6,541.39