Finding the Fourth Proportional to 7,475.18, 10,315.56 and 4,117.91

Step by Step Solution

1. Step 1: Write the proportion equation
   7,475.18 : 10,315.56 = 4,117.91 : x
2. Step 2: Convert to fraction form
   7,475.18/10,315.56 = 4,117.91/x
3. Step 3: Cross multiply
   7,475.18x = 10,315.56 × 4,117.91
4. Step 4: Simplify right side
   7,475.18x = 42,478,511.54
5. Step 5: Solve for x
   x = 42,478,511.54/7,475.18
6. Step 6: Final answer
   x = 5,682.61