Finding the Fourth Proportional to 10,125.61, 13,972.89 and 7,472.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,125.61 : 13,972.89 = 7,472.05 : x
2. Step 2: Convert to fraction form
   10,125.61/13,972.89 = 7,472.05/x
3. Step 3: Cross multiply
   10,125.61x = 13,972.89 × 7,472.05
4. Step 4: Simplify right side
   10,125.61x = 104,406,132.72
5. Step 5: Solve for x
   x = 104,406,132.72/10,125.61
6. Step 6: Final answer
   x = 10,311.10