Finding the Fourth Proportional to 11,931.59, 17,892.16 and 4,906.91

Step by Step Solution

1. Step 1: Write the proportion equation
   11,931.59 : 17,892.16 = 4,906.91 : x
2. Step 2: Convert to fraction form
   11,931.59/17,892.16 = 4,906.91/x
3. Step 3: Cross multiply
   11,931.59x = 17,892.16 × 4,906.91
4. Step 4: Simplify right side
   11,931.59x = 87,795,117.10
5. Step 5: Solve for x
   x = 87,795,117.10/11,931.59
6. Step 6: Final answer
   x = 7,358.21