Finding the Fourth Proportional to 13,870.58, 19,140.42 and 7,901.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,870.58 : 19,140.42 = 7,901.15 : x
2. Step 2: Convert to fraction form
   13,870.58/19,140.42 = 7,901.15/x
3. Step 3: Cross multiply
   13,870.58x = 19,140.42 × 7,901.15
4. Step 4: Simplify right side
   13,870.58x = 151,231,289.98
5. Step 5: Solve for x
   x = 151,231,289.98/13,870.58
6. Step 6: Final answer
   x = 10,903.03