Finding the Fourth Proportional to 23,719.90, 32,731.80 and 13,109.92

Step by Step Solution

1. Step 1: Write the proportion equation
   23,719.90 : 32,731.80 = 13,109.92 : x
2. Step 2: Convert to fraction form
   23,719.90/32,731.80 = 13,109.92/x
3. Step 3: Cross multiply
   23,719.90x = 32,731.80 × 13,109.92
4. Step 4: Simplify right side
   23,719.90x = 429,111,279.46
5. Step 5: Solve for x
   x = 429,111,279.46/23,719.90
6. Step 6: Final answer
   x = 18,090.77