Finding the Fourth Proportional to 7,711.51, 10,641.89 and 4,174.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,711.51 : 10,641.89 = 4,174.72 : x
2. Step 2: Convert to fraction form
   7,711.51/10,641.89 = 4,174.72/x
3. Step 3: Cross multiply
   7,711.51x = 10,641.89 × 4,174.72
4. Step 4: Simplify right side
   7,711.51x = 44,426,901.30
5. Step 5: Solve for x
   x = 44,426,901.30/7,711.51
6. Step 6: Final answer
   x = 5,761.12