Finding the Fourth Proportional to 13,772.31, 19,005.89 and 7,484.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,772.31 : 19,005.89 = 7,484.69 : x
2. Step 2: Convert to fraction form
   13,772.31/19,005.89 = 7,484.69/x
3. Step 3: Cross multiply
   13,772.31x = 19,005.89 × 7,484.69
4. Step 4: Simplify right side
   13,772.31x = 142,253,062.37
5. Step 5: Solve for x
   x = 142,253,062.37/13,772.31
6. Step 6: Final answer
   x = 10,328.92