Finding the Fourth Proportional to 35,162.16, 48,518.88 and 21,012

Step by Step Solution

1. Step 1: Write the proportion equation
   35,162.16 : 48,518.88 = 21,012 : x
2. Step 2: Convert to fraction form
   35,162.16/48,518.88 = 21,012/x
3. Step 3: Cross multiply
   35,162.16x = 48,518.88 × 21,012
4. Step 4: Simplify right side
   35,162.16x = 1,019,478,706.56
5. Step 5: Solve for x
   x = 1,019,478,706.56/35,162.16
6. Step 6: Final answer
   x = 28,993.63