Finding the Fourth Proportional to 10,145.36, 14,000.52 and 7,124.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,145.36 : 14,000.52 = 7,124.72 : x
2. Step 2: Convert to fraction form
   10,145.36/14,000.52 = 7,124.72/x
3. Step 3: Cross multiply
   10,145.36x = 14,000.52 × 7,124.72
4. Step 4: Simplify right side
   10,145.36x = 99,749,784.85
5. Step 5: Solve for x
   x = 99,749,784.85/10,145.36
6. Step 6: Final answer
   x = 9,832.06