Finding the Fourth Proportional to 16,100.01, 22,206.78 and 15,558.12

Step by Step Solution

1. Step 1: Write the proportion equation
   16,100.01 : 22,206.78 = 15,558.12 : x
2. Step 2: Convert to fraction form
   16,100.01/22,206.78 = 15,558.12/x
3. Step 3: Cross multiply
   16,100.01x = 22,206.78 × 15,558.12
4. Step 4: Simplify right side
   16,100.01x = 345,495,748.05
5. Step 5: Solve for x
   x = 345,495,748.05/16,100.01
6. Step 6: Final answer
   x = 21,459.35