Finding the Fourth Proportional to 10,523.56, 15,758.42 and 10,212.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,523.56 : 15,758.42 = 10,212.12 : x
2. Step 2: Convert to fraction form
   10,523.56/15,758.42 = 10,212.12/x
3. Step 3: Cross multiply
   10,523.56x = 15,758.42 × 10,212.12
4. Step 4: Simplify right side
   10,523.56x = 160,926,876.05
5. Step 5: Solve for x
   x = 160,926,876.05/10,523.56
6. Step 6: Final answer
   x = 15,292.06