Finding the Fourth Proportional to 13,875.34, 19,147.58 and 7,587.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,875.34 : 19,147.58 = 7,587.31 : x
2. Step 2: Convert to fraction form
   13,875.34/19,147.58 = 7,587.31/x
3. Step 3: Cross multiply
   13,875.34x = 19,147.58 × 7,587.31
4. Step 4: Simplify right side
   13,875.34x = 145,278,625.21
5. Step 5: Solve for x
   x = 145,278,625.21/13,875.34
6. Step 6: Final answer
   x = 10,470.27