Finding the Fourth Proportional to 8,978.82, 13,458.87 and 5,029.08

Step by Step Solution

1. Step 1: Write the proportion equation
   8,978.82 : 13,458.87 = 5,029.08 : x
2. Step 2: Convert to fraction form
   8,978.82/13,458.87 = 5,029.08/x
3. Step 3: Cross multiply
   8,978.82x = 13,458.87 × 5,029.08
4. Step 4: Simplify right side
   8,978.82x = 67,685,733.94
5. Step 5: Solve for x
   x = 67,685,733.94/8,978.82
6. Step 6: Final answer
   x = 7,538.38