Finding the Fourth Proportional to 31,338.19, 47,019.59 and 13,795.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,338.19 : 47,019.59 = 13,795.72 : x
2. Step 2: Convert to fraction form
   31,338.19/47,019.59 = 13,795.72/x
3. Step 3: Cross multiply
   31,338.19x = 47,019.59 × 13,795.72
4. Step 4: Simplify right side
   31,338.19x = 648,669,098.15
5. Step 5: Solve for x
   x = 648,669,098.15/31,338.19
6. Step 6: Final answer
   x = 20,699.00