Finding the Fourth Proportional to 13,875.17, 19,143.06 and 7,902.61

Step by Step Solution

1. Step 1: Write the proportion equation
   13,875.17 : 19,143.06 = 7,902.61 : x
2. Step 2: Convert to fraction form
   13,875.17/19,143.06 = 7,902.61/x
3. Step 3: Cross multiply
   13,875.17x = 19,143.06 × 7,902.61
4. Step 4: Simplify right side
   13,875.17x = 151,280,189.80
5. Step 5: Solve for x
   x = 151,280,189.80/13,875.17
6. Step 6: Final answer
   x = 10,902.94