Finding the Fourth Proportional to 35,359.32, 48,787.56 and 21,216.72

Step by Step Solution

1. Step 1: Write the proportion equation
   35,359.32 : 48,787.56 = 21,216.72 : x
2. Step 2: Convert to fraction form
   35,359.32/48,787.56 = 21,216.72/x
3. Step 3: Cross multiply
   35,359.32x = 48,787.56 × 21,216.72
4. Step 4: Simplify right side
   35,359.32x = 1,035,112,000.00
5. Step 5: Solve for x
   x = 1,035,112,000.00/35,359.32
6. Step 6: Final answer
   x = 29,274.09