Finding the Fourth Proportional to 13,870.84, 19,141.68 and 7,902.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,870.84 : 19,141.68 = 7,902.76 : x
2. Step 2: Convert to fraction form
   13,870.84/19,141.68 = 7,902.76/x
3. Step 3: Cross multiply
   13,870.84x = 19,141.68 × 7,902.76
4. Step 4: Simplify right side
   13,870.84x = 151,272,103.04
5. Step 5: Solve for x
   x = 151,272,103.04/13,870.84
6. Step 6: Final answer
   x = 10,905.76