Finding the Fourth Proportional to 10,401.19, 14,345.38 and 7,857.43

Step by Step Solution

1. Step 1: Write the proportion equation
   10,401.19 : 14,345.38 = 7,857.43 : x
2. Step 2: Convert to fraction form
   10,401.19/14,345.38 = 7,857.43/x
3. Step 3: Cross multiply
   10,401.19x = 14,345.38 × 7,857.43
4. Step 4: Simplify right side
   10,401.19x = 112,717,819.17
5. Step 5: Solve for x
   x = 112,717,819.17/10,401.19
6. Step 6: Final answer
   x = 10,837.01