Finding the Fourth Proportional to 32,686.76, 45,093.30 and 21,787.40

Step by Step Solution

1. Step 1: Write the proportion equation
   32,686.76 : 45,093.30 = 21,787.40 : x
2. Step 2: Convert to fraction form
   32,686.76/45,093.30 = 21,787.40/x
3. Step 3: Cross multiply
   32,686.76x = 45,093.30 × 21,787.40
4. Step 4: Simplify right side
   32,686.76x = 982,465,764.42
5. Step 5: Solve for x
   x = 982,465,764.42/32,686.76
6. Step 6: Final answer
   x = 30,056.99