Finding the Fourth Proportional to 9,003.91, 13,511.94 and 3,160.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,003.91 : 13,511.94 = 3,160.57 : x
2. Step 2: Convert to fraction form
   9,003.91/13,511.94 = 3,160.57/x
3. Step 3: Cross multiply
   9,003.91x = 13,511.94 × 3,160.57
4. Step 4: Simplify right side
   9,003.91x = 42,705,432.21
5. Step 5: Solve for x
   x = 42,705,432.21/9,003.91
6. Step 6: Final answer
   x = 4,742.99