Finding the Fourth Proportional to 14,148.72, 21,218.64 and 4,787.00

Step by Step Solution

1. Step 1: Write the proportion equation
   14,148.72 : 21,218.64 = 4,787.00 : x
2. Step 2: Convert to fraction form
   14,148.72/21,218.64 = 4,787.00/x
3. Step 3: Cross multiply
   14,148.72x = 21,218.64 × 4,787.00
4. Step 4: Simplify right side
   14,148.72x = 101,573,523.59
5. Step 5: Solve for x
   x = 101,573,523.59/14,148.72
6. Step 6: Final answer
   x = 7,178.99