Finding the Fourth Proportional to 11,490.60, 15,858.52 and 7,013.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,490.60 : 15,858.52 = 7,013.42 : x
2. Step 2: Convert to fraction form
   11,490.60/15,858.52 = 7,013.42/x
3. Step 3: Cross multiply
   11,490.60x = 15,858.52 × 7,013.42
4. Step 4: Simplify right side
   11,490.60x = 111,222,461.34
5. Step 5: Solve for x
   x = 111,222,461.34/11,490.60
6. Step 6: Final answer
   x = 9,679.43