Finding the Fourth Proportional to 9,885.56, 13,630.86 and 7,397.24

Step by Step Solution

1. Step 1: Write the proportion equation
   9,885.56 : 13,630.86 = 7,397.24 : x
2. Step 2: Convert to fraction form
   9,885.56/13,630.86 = 7,397.24/x
3. Step 3: Cross multiply
   9,885.56x = 13,630.86 × 7,397.24
4. Step 4: Simplify right side
   9,885.56x = 100,830,742.83
5. Step 5: Solve for x
   x = 100,830,742.83/9,885.56
6. Step 6: Final answer
   x = 10,199.80