Finding the Fourth Proportional to 8,997.78, 13,498.59 and 3,154.74

Step by Step Solution

1. Step 1: Write the proportion equation
   8,997.78 : 13,498.59 = 3,154.74 : x
2. Step 2: Convert to fraction form
   8,997.78/13,498.59 = 3,154.74/x
3. Step 3: Cross multiply
   8,997.78x = 13,498.59 × 3,154.74
4. Step 4: Simplify right side
   8,997.78x = 42,584,541.82
5. Step 5: Solve for x
   x = 42,584,541.82/8,997.78
6. Step 6: Final answer
   x = 4,732.78