Finding the Fourth Proportional to 13,051.90, 19,573.89 and 3,691.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,051.90 : 19,573.89 = 3,691.18 : x
2. Step 2: Convert to fraction form
   13,051.90/19,573.89 = 3,691.18/x
3. Step 3: Cross multiply
   13,051.90x = 19,573.89 × 3,691.18
4. Step 4: Simplify right side
   13,051.90x = 72,250,751.29
5. Step 5: Solve for x
   x = 72,250,751.29/13,051.90
6. Step 6: Final answer
   x = 5,535.65