Finding the Fourth Proportional to 10,654.70, 14,688.09 and 7,458.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,654.70 : 14,688.09 = 7,458.09 : x
2. Step 2: Convert to fraction form
   10,654.70/14,688.09 = 7,458.09/x
3. Step 3: Cross multiply
   10,654.70x = 14,688.09 × 7,458.09
4. Step 4: Simplify right side
   10,654.70x = 109,545,097.15
5. Step 5: Solve for x
   x = 109,545,097.15/10,654.70
6. Step 6: Final answer
   x = 10,281.39