Finding the Fourth Proportional to 19,131.98, 28,700.16 and 5,092.61

Step by Step Solution

1. Step 1: Write the proportion equation
   19,131.98 : 28,700.16 = 5,092.61 : x
2. Step 2: Convert to fraction form
   19,131.98/28,700.16 = 5,092.61/x
3. Step 3: Cross multiply
   19,131.98x = 28,700.16 × 5,092.61
4. Step 4: Simplify right side
   19,131.98x = 146,158,721.82
5. Step 5: Solve for x
   x = 146,158,721.82/19,131.98
6. Step 6: Final answer
   x = 7,639.50