Finding the Fourth Proportional to 14,007.84, 21,016.56 and 4,780.32

Step by Step Solution

1. Step 1: Write the proportion equation
   14,007.84 : 21,016.56 = 4,780.32 : x
2. Step 2: Convert to fraction form
   14,007.84/21,016.56 = 4,780.32/x
3. Step 3: Cross multiply
   14,007.84x = 21,016.56 × 4,780.32
4. Step 4: Simplify right side
   14,007.84x = 100,465,882.10
5. Step 5: Solve for x
   x = 100,465,882.10/14,007.84
6. Step 6: Final answer
   x = 7,172.12