Finding the Fourth Proportional to 10,557.30, 14,508.09 and 10,069.43

Step by Step Solution

1. Step 1: Write the proportion equation
   10,557.30 : 14,508.09 = 10,069.43 : x
2. Step 2: Convert to fraction form
   10,557.30/14,508.09 = 10,069.43/x
3. Step 3: Cross multiply
   10,557.30x = 14,508.09 × 10,069.43
4. Step 4: Simplify right side
   10,557.30x = 146,088,124.15
5. Step 5: Solve for x
   x = 146,088,124.15/10,557.30
6. Step 6: Final answer
   x = 13,837.64