Finding the Fourth Proportional to 12,960,573.98, 17,885,245.55 and 7,159,230.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,960,573.98 : 17,885,245.55 = 7,159,230.86 : x
2. Step 2: Convert to fraction form
   12,960,573.98/17,885,245.55 = 7,159,230.86/x
3. Step 3: Cross multiply
   12,960,573.98x = 17,885,245.55 × 7,159,230.86
4. Step 4: Simplify right side
   12,960,573.98x = 128,044,601,755,015.31
5. Step 5: Solve for x
   x = 128,044,601,755,015.31/12,960,573.98
6. Step 6: Final answer
   x = 9,879,547.16