Finding the Fourth Proportional to 23,910.32, 32,976.59 and 21,223.50

Step by Step Solution

1. Step 1: Write the proportion equation
   23,910.32 : 32,976.59 = 21,223.50 : x
2. Step 2: Convert to fraction form
   23,910.32/32,976.59 = 21,223.50/x
3. Step 3: Cross multiply
   23,910.32x = 32,976.59 × 21,223.50
4. Step 4: Simplify right side
   23,910.32x = 699,878,657.87
5. Step 5: Solve for x
   x = 699,878,657.87/23,910.32
6. Step 6: Final answer
   x = 29,270.99