Finding the Fourth Proportional to 13,777.59, 19,013.36 and 7,490.37

Step by Step Solution

1. Step 1: Write the proportion equation
   13,777.59 : 19,013.36 = 7,490.37 : x
2. Step 2: Convert to fraction form
   13,777.59/19,013.36 = 7,490.37/x
3. Step 3: Cross multiply
   13,777.59x = 19,013.36 × 7,490.37
4. Step 4: Simplify right side
   13,777.59x = 142,417,063.89
5. Step 5: Solve for x
   x = 142,417,063.89/13,777.59
6. Step 6: Final answer
   x = 10,336.86