Finding the Fourth Proportional to 13,111.53, 19,675.19 and 5,212.61

Step by Step Solution

1. Step 1: Write the proportion equation
   13,111.53 : 19,675.19 = 5,212.61 : x
2. Step 2: Convert to fraction form
   13,111.53/19,675.19 = 5,212.61/x
3. Step 3: Cross multiply
   13,111.53x = 19,675.19 × 5,212.61
4. Step 4: Simplify right side
   13,111.53x = 102,559,092.15
5. Step 5: Solve for x
   x = 102,559,092.15/13,111.53
6. Step 6: Final answer
   x = 7,822.05