Finding the Fourth Proportional to 12,402,728.94, 17,111,919.15 and 7,242,367.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,402,728.94 : 17,111,919.15 = 7,242,367.98 : x
2. Step 2: Convert to fraction form
   12,402,728.94/17,111,919.15 = 7,242,367.98/x
3. Step 3: Cross multiply
   12,402,728.94x = 17,111,919.15 × 7,242,367.98
4. Step 4: Simplify right side
   12,402,728.94x = 123,930,815,328,308.81
5. Step 5: Solve for x
   x = 123,930,815,328,308.81/12,402,728.94
6. Step 6: Final answer
   x = 9,992,221.54