Finding the Fourth Proportional to 13,775.12, 19,009.56 and 7,487.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,775.12 : 19,009.56 = 7,487.48 : x
2. Step 2: Convert to fraction form
   13,775.12/19,009.56 = 7,487.48/x
3. Step 3: Cross multiply
   13,775.12x = 19,009.56 × 7,487.48
4. Step 4: Simplify right side
   13,775.12x = 142,333,700.31
5. Step 5: Solve for x
   x = 142,333,700.31/13,775.12
6. Step 6: Final answer
   x = 10,332.67