Finding the Fourth Proportional to 11,621.61, 17,422.59 and 5,042.85

Step by Step Solution

1. Step 1: Write the proportion equation
   11,621.61 : 17,422.59 = 5,042.85 : x
2. Step 2: Convert to fraction form
   11,621.61/17,422.59 = 5,042.85/x
3. Step 3: Cross multiply
   11,621.61x = 17,422.59 × 5,042.85
4. Step 4: Simplify right side
   11,621.61x = 87,859,507.98
5. Step 5: Solve for x
   x = 87,859,507.98/11,621.61
6. Step 6: Final answer
   x = 7,560.01