Finding the Fourth Proportional to 11,830.01, 17,719.58 and 5,580.66

Step by Step Solution

1. Step 1: Write the proportion equation
   11,830.01 : 17,719.58 = 5,580.66 : x
2. Step 2: Convert to fraction form
   11,830.01/17,719.58 = 5,580.66/x
3. Step 3: Cross multiply
   11,830.01x = 17,719.58 × 5,580.66
4. Step 4: Simplify right side
   11,830.01x = 98,886,951.32
5. Step 5: Solve for x
   x = 98,886,951.32/11,830.01
6. Step 6: Final answer
   x = 8,358.99