Finding the Fourth Proportional to 13,875.58, 19,144.61 and 7,907.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,875.58 : 19,144.61 = 7,907.12 : x
2. Step 2: Convert to fraction form
   13,875.58/19,144.61 = 7,907.12/x
3. Step 3: Cross multiply
   13,875.58x = 19,144.61 × 7,907.12
4. Step 4: Simplify right side
   13,875.58x = 151,378,728.62
5. Step 5: Solve for x
   x = 151,378,728.62/13,875.58
6. Step 6: Final answer
   x = 10,909.72