Finding the Fourth Proportional to 13,777.31, 19,012.83 and 7,489.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,777.31 : 19,012.83 = 7,489.82 : x
2. Step 2: Convert to fraction form
   13,777.31/19,012.83 = 7,489.82/x
3. Step 3: Cross multiply
   13,777.31x = 19,012.83 × 7,489.82
4. Step 4: Simplify right side
   13,777.31x = 142,402,693.84
5. Step 5: Solve for x
   x = 142,402,693.84/13,777.31
6. Step 6: Final answer
   x = 10,336.03