Finding the Fourth Proportional to 7,336.02, 10,123.64 and 3,978.91

Step by Step Solution

1. Step 1: Write the proportion equation
   7,336.02 : 10,123.64 = 3,978.91 : x
2. Step 2: Convert to fraction form
   7,336.02/10,123.64 = 3,978.91/x
3. Step 3: Cross multiply
   7,336.02x = 10,123.64 × 3,978.91
4. Step 4: Simplify right side
   7,336.02x = 40,281,032.54
5. Step 5: Solve for x
   x = 40,281,032.54/7,336.02
6. Step 6: Final answer
   x = 5,490.86