Finding the Fourth Proportional to 13,978,772.48, 19,291,326.72 and 7,867,596.80

Step by Step Solution

1. Step 1: Write the proportion equation
   13,978,772.48 : 19,291,326.72 = 7,867,596.80 : x
2. Step 2: Convert to fraction form
   13,978,772.48/19,291,326.72 = 7,867,596.80/x
3. Step 3: Cross multiply
   13,978,772.48x = 19,291,326.72 × 7,867,596.80
4. Step 4: Simplify right side
   13,978,772.48x = 151,776,380,370,026.47
5. Step 5: Solve for x
   x = 151,776,380,370,026.47/13,978,772.48
6. Step 6: Final answer
   x = 10,857,632.93