Finding the Fourth Proportional to 11,426.77, 17,142.30 and 5,187.22

Step by Step Solution

1. Step 1: Write the proportion equation
   11,426.77 : 17,142.30 = 5,187.22 : x
2. Step 2: Convert to fraction form
   11,426.77/17,142.30 = 5,187.22/x
3. Step 3: Cross multiply
   11,426.77x = 17,142.30 × 5,187.22
4. Step 4: Simplify right side
   11,426.77x = 88,920,838.55
5. Step 5: Solve for x
   x = 88,920,838.55/11,426.77
6. Step 6: Final answer
   x = 7,781.80