Finding the Fourth Proportional to 12,671,146.30, 17,486,550.69 and 7,164,402.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,671,146.30 : 17,486,550.69 = 7,164,402.86 : x
2. Step 2: Convert to fraction form
   12,671,146.30/17,486,550.69 = 7,164,402.86/x
3. Step 3: Cross multiply
   12,671,146.30x = 17,486,550.69 × 7,164,402.86
4. Step 4: Simplify right side
   12,671,146.30x = 125,280,693,774,970.98
5. Step 5: Solve for x
   x = 125,280,693,774,970.98/12,671,146.30
6. Step 6: Final answer
   x = 9,887,084.47