Finding the Fourth Proportional to 23,106.51, 31,886.87 and 13,038.23

Step by Step Solution

1. Step 1: Write the proportion equation
   23,106.51 : 31,886.87 = 13,038.23 : x
2. Step 2: Convert to fraction form
   23,106.51/31,886.87 = 13,038.23/x
3. Step 3: Cross multiply
   23,106.51x = 31,886.87 × 13,038.23
4. Step 4: Simplify right side
   23,106.51x = 415,748,359.57
5. Step 5: Solve for x
   x = 415,748,359.57/23,106.51
6. Step 6: Final answer
   x = 17,992.69