Finding the Fourth Proportional to 11,875.77, 17,819.60 and 7,929.18

Step by Step Solution

1. Step 1: Write the proportion equation
   11,875.77 : 17,819.60 = 7,929.18 : x
2. Step 2: Convert to fraction form
   11,875.77/17,819.60 = 7,929.18/x
3. Step 3: Cross multiply
   11,875.77x = 17,819.60 × 7,929.18
4. Step 4: Simplify right side
   11,875.77x = 141,294,776.28
5. Step 5: Solve for x
   x = 141,294,776.28/11,875.77
6. Step 6: Final answer
   x = 11,897.74