Finding the Fourth Proportional to 14,669.46, 21,990.69 and 5,307.30

Step by Step Solution

1. Step 1: Write the proportion equation
   14,669.46 : 21,990.69 = 5,307.30 : x
2. Step 2: Convert to fraction form
   14,669.46/21,990.69 = 5,307.30/x
3. Step 3: Cross multiply
   14,669.46x = 21,990.69 × 5,307.30
4. Step 4: Simplify right side
   14,669.46x = 116,711,189.04
5. Step 5: Solve for x
   x = 116,711,189.04/14,669.46
6. Step 6: Final answer
   x = 7,956.07