Finding the Fourth Proportional to 12,985,903.25, 17,921,073.98 and 7,184,590.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,985,903.25 : 17,921,073.98 = 7,184,590.50 : x
2. Step 2: Convert to fraction form
   12,985,903.25/17,921,073.98 = 7,184,590.50/x
3. Step 3: Cross multiply
   12,985,903.25x = 17,921,073.98 × 7,184,590.50
4. Step 4: Simplify right side
   12,985,903.25x = 128,755,577,884,466.67
5. Step 5: Solve for x
   x = 128,755,577,884,466.67/12,985,903.25
6. Step 6: Final answer
   x = 9,915,026.74