Finding the Fourth Proportional to 8,997.86, 13,488.53 and 3,151.28

Step by Step Solution

1. Step 1: Write the proportion equation
   8,997.86 : 13,488.53 = 3,151.28 : x
2. Step 2: Convert to fraction form
   8,997.86/13,488.53 = 3,151.28/x
3. Step 3: Cross multiply
   8,997.86x = 13,488.53 × 3,151.28
4. Step 4: Simplify right side
   8,997.86x = 42,506,051.62
5. Step 5: Solve for x
   x = 42,506,051.62/8,997.86
6. Step 6: Final answer
   x = 4,724.02