Finding the Fourth Proportional to 17,820.07, 26,616.29 and 16,128.88

Step by Step Solution

1. Step 1: Write the proportion equation
   17,820.07 : 26,616.29 = 16,128.88 : x
2. Step 2: Convert to fraction form
   17,820.07/26,616.29 = 16,128.88/x
3. Step 3: Cross multiply
   17,820.07x = 26,616.29 × 16,128.88
4. Step 4: Simplify right side
   17,820.07x = 429,290,800.27
5. Step 5: Solve for x
   x = 429,290,800.27/17,820.07
6. Step 6: Final answer
   x = 24,090.30