Finding the Fourth Proportional to 31,436.51, 47,160.59 and 10,378.01

Step by Step Solution

1. Step 1: Write the proportion equation
   31,436.51 : 47,160.59 = 10,378.01 : x
2. Step 2: Convert to fraction form
   31,436.51/47,160.59 = 10,378.01/x
3. Step 3: Cross multiply
   31,436.51x = 47,160.59 × 10,378.01
4. Step 4: Simplify right side
   31,436.51x = 489,432,786.93
5. Step 5: Solve for x
   x = 489,432,786.93/31,436.51
6. Step 6: Final answer
   x = 15,568.93