Finding the Fourth Proportional to 13,868.04, 19,139.90 and 7,900.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,868.04 : 19,139.90 = 7,900.27 : x
2. Step 2: Convert to fraction form
   13,868.04/19,139.90 = 7,900.27/x
3. Step 3: Cross multiply
   13,868.04x = 19,139.90 × 7,900.27
4. Step 4: Simplify right side
   13,868.04x = 151,210,290.42
5. Step 5: Solve for x
   x = 151,210,290.42/13,868.04
6. Step 6: Final answer
   x = 10,903.51