Finding the Fourth Proportional to 7,429.86, 10,253.28 and 4,072.59

Step by Step Solution

1. Step 1: Write the proportion equation
   7,429.86 : 10,253.28 = 4,072.59 : x
2. Step 2: Convert to fraction form
   7,429.86/10,253.28 = 4,072.59/x
3. Step 3: Cross multiply
   7,429.86x = 10,253.28 × 4,072.59
4. Step 4: Simplify right side
   7,429.86x = 41,757,405.60
5. Step 5: Solve for x
   x = 41,757,405.60/7,429.86
6. Step 6: Final answer
   x = 5,620.21