Finding the Fourth Proportional to 9,100.86, 13,645.68 and 4,172.01

Step by Step Solution

1. Step 1: Write the proportion equation
   9,100.86 : 13,645.68 = 4,172.01 : x
2. Step 2: Convert to fraction form
   9,100.86/13,645.68 = 4,172.01/x
3. Step 3: Cross multiply
   9,100.86x = 13,645.68 × 4,172.01
4. Step 4: Simplify right side
   9,100.86x = 56,929,913.42
5. Step 5: Solve for x
   x = 56,929,913.42/9,100.86
6. Step 6: Final answer
   x = 6,255.44