Finding the Fourth Proportional to 11,830.57, 17,749.91 and 5,261.34

Step by Step Solution

1. Step 1: Write the proportion equation
   11,830.57 : 17,749.91 = 5,261.34 : x
2. Step 2: Convert to fraction form
   11,830.57/17,749.91 = 5,261.34/x
3. Step 3: Cross multiply
   11,830.57x = 17,749.91 × 5,261.34
4. Step 4: Simplify right side
   11,830.57x = 93,388,196.42
5. Step 5: Solve for x
   x = 93,388,196.42/11,830.57
6. Step 6: Final answer
   x = 7,893.80