Finding the Fourth Proportional to 11,820.33, 17,736.12 and 7,376.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,820.33 : 17,736.12 = 7,376.78 : x
2. Step 2: Convert to fraction form
   11,820.33/17,736.12 = 7,376.78/x
3. Step 3: Cross multiply
   11,820.33x = 17,736.12 × 7,376.78
4. Step 4: Simplify right side
   11,820.33x = 130,835,499.63
5. Step 5: Solve for x
   x = 130,835,499.63/11,820.33
6. Step 6: Final answer
   x = 11,068.69