Finding the Fourth Proportional to 13,126.16, 18,105.96 and 7,817.84

Step by Step Solution

1. Step 1: Write the proportion equation
   13,126.16 : 18,105.96 = 7,817.84 : x
2. Step 2: Convert to fraction form
   13,126.16/18,105.96 = 7,817.84/x
3. Step 3: Cross multiply
   13,126.16x = 18,105.96 × 7,817.84
4. Step 4: Simplify right side
   13,126.16x = 141,549,498.33
5. Step 5: Solve for x
   x = 141,549,498.33/13,126.16
6. Step 6: Final answer
   x = 10,783.77