Finding the Fourth Proportional to 16,200.81, 24,302.43 and 7,887.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,200.81 : 24,302.43 = 7,887.78 : x
2. Step 2: Convert to fraction form
   16,200.81/24,302.43 = 7,887.78/x
3. Step 3: Cross multiply
   16,200.81x = 24,302.43 × 7,887.78
4. Step 4: Simplify right side
   16,200.81x = 191,692,221.31
5. Step 5: Solve for x
   x = 191,692,221.31/16,200.81
6. Step 6: Final answer
   x = 11,832.26