Finding the Fourth Proportional to 23,111.56, 31,893.20 and 13,039.84

Step by Step Solution

1. Step 1: Write the proportion equation
   23,111.56 : 31,893.20 = 13,039.84 : x
2. Step 2: Convert to fraction form
   23,111.56/31,893.20 = 13,039.84/x
3. Step 3: Cross multiply
   23,111.56x = 31,893.20 × 13,039.84
4. Step 4: Simplify right side
   23,111.56x = 415,882,225.09
5. Step 5: Solve for x
   x = 415,882,225.09/23,111.56
6. Step 6: Final answer
   x = 17,994.55