Finding the Fourth Proportional to 31,400.65, 47,105.06 and 10,342.84

Step by Step Solution

1. Step 1: Write the proportion equation
   31,400.65 : 47,105.06 = 10,342.84 : x
2. Step 2: Convert to fraction form
   31,400.65/47,105.06 = 10,342.84/x
3. Step 3: Cross multiply
   31,400.65x = 47,105.06 × 10,342.84
4. Step 4: Simplify right side
   31,400.65x = 487,200,098.77
5. Step 5: Solve for x
   x = 487,200,098.77/31,400.65
6. Step 6: Final answer
   x = 15,515.61