Finding the Fourth Proportional to 31,836.24, 47,751.93 and 13,111.47

Step by Step Solution

1. Step 1: Write the proportion equation
   31,836.24 : 47,751.93 = 13,111.47 : x
2. Step 2: Convert to fraction form
   31,836.24/47,751.93 = 13,111.47/x
3. Step 3: Cross multiply
   31,836.24x = 47,751.93 × 13,111.47
4. Step 4: Simplify right side
   31,836.24x = 626,097,997.64
5. Step 5: Solve for x
   x = 626,097,997.64/31,836.24
6. Step 6: Final answer
   x = 19,666.20