Finding the Fourth Proportional to 21,910.32, 32,873.76 and 13,151.34

Step by Step Solution

1. Step 1: Write the proportion equation
   21,910.32 : 32,873.76 = 13,151.34 : x
2. Step 2: Convert to fraction form
   21,910.32/32,873.76 = 13,151.34/x
3. Step 3: Cross multiply
   21,910.32x = 32,873.76 × 13,151.34
4. Step 4: Simplify right side
   21,910.32x = 432,333,994.84
5. Step 5: Solve for x
   x = 432,333,994.84/21,910.32
6. Step 6: Final answer
   x = 19,731.98