Finding the Fourth Proportional to 13,873.81, 19,145.82 and 7,905.49

Step by Step Solution

1. Step 1: Write the proportion equation
   13,873.81 : 19,145.82 = 7,905.49 : x
2. Step 2: Convert to fraction form
   13,873.81/19,145.82 = 7,905.49/x
3. Step 3: Cross multiply
   13,873.81x = 19,145.82 × 7,905.49
4. Step 4: Simplify right side
   13,873.81x = 151,357,088.55
5. Step 5: Solve for x
   x = 151,357,088.55/13,873.81
6. Step 6: Final answer
   x = 10,909.55