Finding the Fourth Proportional to 10,171.99, 15,261.23 and 8,100.01

Step by Step Solution

1. Step 1: Write the proportion equation
   10,171.99 : 15,261.23 = 8,100.01 : x
2. Step 2: Convert to fraction form
   10,171.99/15,261.23 = 8,100.01/x
3. Step 3: Cross multiply
   10,171.99x = 15,261.23 × 8,100.01
4. Step 4: Simplify right side
   10,171.99x = 123,616,115.61
5. Step 5: Solve for x
   x = 123,616,115.61/10,171.99
6. Step 6: Final answer
   x = 12,152.60