Finding the Fourth Proportional to 13,830.35, 19,085.22 and 7,861.35

Step by Step Solution

1. Step 1: Write the proportion equation
   13,830.35 : 19,085.22 = 7,861.35 : x
2. Step 2: Convert to fraction form
   13,830.35/19,085.22 = 7,861.35/x
3. Step 3: Cross multiply
   13,830.35x = 19,085.22 × 7,861.35
4. Step 4: Simplify right side
   13,830.35x = 150,035,665.82
5. Step 5: Solve for x
   x = 150,035,665.82/13,830.35
6. Step 6: Final answer
   x = 10,848.30