Finding the Fourth Proportional to 11,978.35, 17,957.08 and 4,953.98

Step by Step Solution

1. Step 1: Write the proportion equation
   11,978.35 : 17,957.08 = 4,953.98 : x
2. Step 2: Convert to fraction form
   11,978.35/17,957.08 = 4,953.98/x
3. Step 3: Cross multiply
   11,978.35x = 17,957.08 × 4,953.98
4. Step 4: Simplify right side
   11,978.35x = 88,959,066.26
5. Step 5: Solve for x
   x = 88,959,066.26/11,978.35
6. Step 6: Final answer
   x = 7,426.66