Finding the Fourth Proportional to 13,849.86, 19,111.06 and 7,881.64

Step by Step Solution

1. Step 1: Write the proportion equation
   13,849.86 : 19,111.06 = 7,881.64 : x
2. Step 2: Convert to fraction form
   13,849.86/19,111.06 = 7,881.64/x
3. Step 3: Cross multiply
   13,849.86x = 19,111.06 × 7,881.64
4. Step 4: Simplify right side
   13,849.86x = 150,626,457.01
5. Step 5: Solve for x
   x = 150,626,457.01/13,849.86
6. Step 6: Final answer
   x = 10,875.66