Finding the Fourth Proportional to 11,830.19, 17,742.72 and 4,808.40

Step by Step Solution

1. Step 1: Write the proportion equation
   11,830.19 : 17,742.72 = 4,808.40 : x
2. Step 2: Convert to fraction form
   11,830.19/17,742.72 = 4,808.40/x
3. Step 3: Cross multiply
   11,830.19x = 17,742.72 × 4,808.40
4. Step 4: Simplify right side
   11,830.19x = 85,314,094.85
5. Step 5: Solve for x
   x = 85,314,094.85/11,830.19
6. Step 6: Final answer
   x = 7,211.56