Finding the Fourth Proportional to 9,978.13, 14,953.30 and 5,042.01

Step by Step Solution

1. Step 1: Write the proportion equation
   9,978.13 : 14,953.30 = 5,042.01 : x
2. Step 2: Convert to fraction form
   9,978.13/14,953.30 = 5,042.01/x
3. Step 3: Cross multiply
   9,978.13x = 14,953.30 × 5,042.01
4. Step 4: Simplify right side
   9,978.13x = 75,394,661.51
5. Step 5: Solve for x
   x = 75,394,661.51/9,978.13
6. Step 6: Final answer
   x = 7,555.99