Finding the Fourth Proportional to 35,401.65, 53,111.58 and 10,440.69

Step by Step Solution

1. Step 1: Write the proportion equation
   35,401.65 : 53,111.58 = 10,440.69 : x
2. Step 2: Convert to fraction form
   35,401.65/53,111.58 = 10,440.69/x
3. Step 3: Cross multiply
   35,401.65x = 53,111.58 × 10,440.69
4. Step 4: Simplify right side
   35,401.65x = 554,521,276.63
5. Step 5: Solve for x
   x = 554,521,276.63/35,401.65
6. Step 6: Final answer
   x = 15,663.71