Finding the Fourth Proportional to 9,356,393.98, 12,911,931.39 and 5,488,980.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,356,393.98 : 12,911,931.39 = 5,488,980.94 : x
2. Step 2: Convert to fraction form
   9,356,393.98/12,911,931.39 = 5,488,980.94/x
3. Step 3: Cross multiply
   9,356,393.98x = 12,911,931.39 × 5,488,980.94
4. Step 4: Simplify right side
   9,356,393.98x = 70,873,345,298,297.72
5. Step 5: Solve for x
   x = 70,873,345,298,297.72/9,356,393.98
6. Step 6: Final answer
   x = 7,574,856.88