Finding the Fourth Proportional to 16,468.32, 22,748.40 and 15,690.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,468.32 : 22,748.40 = 15,690.72 : x
2. Step 2: Convert to fraction form
   16,468.32/22,748.40 = 15,690.72/x
3. Step 3: Cross multiply
   16,468.32x = 22,748.40 × 15,690.72
4. Step 4: Simplify right side
   16,468.32x = 356,938,774.85
5. Step 5: Solve for x
   x = 356,938,774.85/16,468.32
6. Step 6: Final answer
   x = 21,674.27