Finding the Fourth Proportional to 13,131.77, 19,694.25 and 4,812.53

Step by Step Solution

1. Step 1: Write the proportion equation
   13,131.77 : 19,694.25 = 4,812.53 : x
2. Step 2: Convert to fraction form
   13,131.77/19,694.25 = 4,812.53/x
3. Step 3: Cross multiply
   13,131.77x = 19,694.25 × 4,812.53
4. Step 4: Simplify right side
   13,131.77x = 94,779,070.48
5. Step 5: Solve for x
   x = 94,779,070.48/13,131.77
6. Step 6: Final answer
   x = 7,217.54