Finding the Fourth Proportional to 31,859.01, 47,747.64 and 13,152.19

Step by Step Solution

1. Step 1: Write the proportion equation
   31,859.01 : 47,747.64 = 13,152.19 : x
2. Step 2: Convert to fraction form
   31,859.01/47,747.64 = 13,152.19/x
3. Step 3: Cross multiply
   31,859.01x = 47,747.64 × 13,152.19
4. Step 4: Simplify right side
   31,859.01x = 627,985,795.89
5. Step 5: Solve for x
   x = 627,985,795.89/31,859.01
6. Step 6: Final answer
   x = 19,711.40