Finding the Fourth Proportional to 13,821.76, 19,062.72 and 10,045.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,821.76 : 19,062.72 = 10,045.12 : x
2. Step 2: Convert to fraction form
   13,821.76/19,062.72 = 10,045.12/x
3. Step 3: Cross multiply
   13,821.76x = 19,062.72 × 10,045.12
4. Step 4: Simplify right side
   13,821.76x = 191,487,309.93
5. Step 5: Solve for x
   x = 191,487,309.93/13,821.76
6. Step 6: Final answer
   x = 13,854.05