Finding the Fourth Proportional to 13,810.86, 19,058.63 and 7,760.61

Step by Step Solution

1. Step 1: Write the proportion equation
   13,810.86 : 19,058.63 = 7,760.61 : x
2. Step 2: Convert to fraction form
   13,810.86/19,058.63 = 7,760.61/x
3. Step 3: Cross multiply
   13,810.86x = 19,058.63 × 7,760.61
4. Step 4: Simplify right side
   13,810.86x = 147,906,555.76
5. Step 5: Solve for x
   x = 147,906,555.76/13,810.86
6. Step 6: Final answer
   x = 10,709.44