Finding the Fourth Proportional to 7,529.32, 10,390.47 and 4,172.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,529.32 : 10,390.47 = 4,172.10 : x
2. Step 2: Convert to fraction form
   7,529.32/10,390.47 = 4,172.10/x
3. Step 3: Cross multiply
   7,529.32x = 10,390.47 × 4,172.10
4. Step 4: Simplify right side
   7,529.32x = 43,350,079.89
5. Step 5: Solve for x
   x = 43,350,079.89/7,529.32
6. Step 6: Final answer
   x = 5,757.50