Finding the Fourth Proportional to 13,870.85, 19,140.95 and 7,901.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,870.85 : 19,140.95 = 7,901.69 : x
2. Step 2: Convert to fraction form
   13,870.85/19,140.95 = 7,901.69/x
3. Step 3: Cross multiply
   13,870.85x = 19,140.95 × 7,901.69
4. Step 4: Simplify right side
   13,870.85x = 151,245,777.25
5. Step 5: Solve for x
   x = 151,245,777.25/13,870.85
6. Step 6: Final answer
   x = 10,903.86