Finding the Fourth Proportional to 11,876.88, 17,829.72 and 5,557.80

Step by Step Solution

1. Step 1: Write the proportion equation
   11,876.88 : 17,829.72 = 5,557.80 : x
2. Step 2: Convert to fraction form
   11,876.88/17,829.72 = 5,557.80/x
3. Step 3: Cross multiply
   11,876.88x = 17,829.72 × 5,557.80
4. Step 4: Simplify right side
   11,876.88x = 99,094,017.82
5. Step 5: Solve for x
   x = 99,094,017.82/11,876.88
6. Step 6: Final answer
   x = 8,343.44