Finding the Fourth Proportional to 16,826.50, 23,199 and 13,790.45

Step by Step Solution

1. Step 1: Write the proportion equation
   16,826.50 : 23,199 = 13,790.45 : x
2. Step 2: Convert to fraction form
   16,826.50/23,199 = 13,790.45/x
3. Step 3: Cross multiply
   16,826.50x = 23,199 × 13,790.45
4. Step 4: Simplify right side
   16,826.50x = 319,924,649.55
5. Step 5: Solve for x
   x = 319,924,649.55/16,826.50
6. Step 6: Final answer
   x = 19,013.14