Finding the Fourth Proportional to 14,150.39, 21,170.70 and 10,210.72

Step by Step Solution

1. Step 1: Write the proportion equation
   14,150.39 : 21,170.70 = 10,210.72 : x
2. Step 2: Convert to fraction form
   14,150.39/21,170.70 = 10,210.72/x
3. Step 3: Cross multiply
   14,150.39x = 21,170.70 × 10,210.72
4. Step 4: Simplify right side
   14,150.39x = 216,168,075.27
5. Step 5: Solve for x
   x = 216,168,075.27/14,150.39
6. Step 6: Final answer
   x = 15,276.48